Home / 3,031.24-4,176.48-2,145.10

Finding the Fourth Proportional to 3,031.24, 4,176.48 and 2,145.10

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Solution

The fourth proportional to 3,031.24, 4,176.48 and 2,145.10 is: 2,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.24 : 4,176.48 = 2,145.10 : x
  2. Step 2: Convert to fraction form
    3,031.24/4,176.48 = 2,145.10/x
  3. Step 3: Cross multiply
    3,031.24x = 4,176.48 × 2,145.10
  4. Step 4: Simplify right side
    3,031.24x = 8,958,967.25
  5. Step 5: Solve for x
    x = 8,958,967.25/3,031.24
  6. Step 6: Final answer
    x = 2,955.55

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Half scale
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Double scale
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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.