Home / 2,271.72-3,135.06-1,387.92

Finding the Fourth Proportional to 2,271.72, 3,135.06 and 1,387.92

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Solution

The fourth proportional to 2,271.72, 3,135.06 and 1,387.92 is: 1,915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.72 : 3,135.06 = 1,387.92 : x
  2. Step 2: Convert to fraction form
    2,271.72/3,135.06 = 1,387.92/x
  3. Step 3: Cross multiply
    2,271.72x = 3,135.06 × 1,387.92
  4. Step 4: Simplify right side
    2,271.72x = 4,351,212.48
  5. Step 5: Solve for x
    x = 4,351,212.48/2,271.72
  6. Step 6: Final answer
    x = 1,915.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,272.72, 3,136.44 and 1,388.92
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.