Home / 3,113.55-4,294.80-1,853.76

Finding the Fourth Proportional to 3,113.55, 4,294.80 and 1,853.76

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Solution

The fourth proportional to 3,113.55, 4,294.80 and 1,853.76 is: 2,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.55 : 4,294.80 = 1,853.76 : x
  2. Step 2: Convert to fraction form
    3,113.55/4,294.80 = 1,853.76/x
  3. Step 3: Cross multiply
    3,113.55x = 4,294.80 × 1,853.76
  4. Step 4: Simplify right side
    3,113.55x = 7,961,528.45
  5. Step 5: Solve for x
    x = 7,961,528.45/3,113.55
  6. Step 6: Final answer
    x = 2,557.06

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Half 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.