Home / 7,345.30-10,136.24-3,988.05

Finding the Fourth Proportional to 7,345.30, 10,136.24 and 3,988.05

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Solution

The fourth proportional to 7,345.30, 10,136.24 and 3,988.05 is: 5,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.30 : 10,136.24 = 3,988.05 : x
  2. Step 2: Convert to fraction form
    7,345.30/10,136.24 = 3,988.05/x
  3. Step 3: Cross multiply
    7,345.30x = 10,136.24 × 3,988.05
  4. Step 4: Simplify right side
    7,345.30x = 40,423,831.93
  5. Step 5: Solve for x
    x = 40,423,831.93/7,345.30
  6. Step 6: Final answer
    x = 5,503.36

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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.