Home / 3,715.10-5,572.65-2,840.30

Finding the Fourth Proportional to 3,715.10, 5,572.65 and 2,840.30

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Solution

The fourth proportional to 3,715.10, 5,572.65 and 2,840.30 is: 4,260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.10 : 5,572.65 = 2,840.30 : x
  2. Step 2: Convert to fraction form
    3,715.10/5,572.65 = 2,840.30/x
  3. Step 3: Cross multiply
    3,715.10x = 5,572.65 × 2,840.30
  4. Step 4: Simplify right side
    3,715.10x = 15,827,997.80
  5. Step 5: Solve for x
    x = 15,827,997.80/3,715.10
  6. Step 6: Final answer
    x = 4,260.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.