Home / 3,715.90-5,127.27-2,389.30

Finding the Fourth Proportional to 3,715.90, 5,127.27 and 2,389.30

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Solution

The fourth proportional to 3,715.90, 5,127.27 and 2,389.30 is: 3,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.90 : 5,127.27 = 2,389.30 : x
  2. Step 2: Convert to fraction form
    3,715.90/5,127.27 = 2,389.30/x
  3. Step 3: Cross multiply
    3,715.90x = 5,127.27 × 2,389.30
  4. Step 4: Simplify right side
    3,715.90x = 12,250,586.21
  5. Step 5: Solve for x
    x = 12,250,586.21/3,715.90
  6. Step 6: Final answer
    x = 3,296.80

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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.