Home / 7,345.14-10,136.30-3,987.95

Finding the Fourth Proportional to 7,345.14, 10,136.30 and 3,987.95

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Solution

The fourth proportional to 7,345.14, 10,136.30 and 3,987.95 is: 5,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.14 : 10,136.30 = 3,987.95 : x
  2. Step 2: Convert to fraction form
    7,345.14/10,136.30 = 3,987.95/x
  3. Step 3: Cross multiply
    7,345.14x = 10,136.30 × 3,987.95
  4. Step 4: Simplify right side
    7,345.14x = 40,423,057.59
  5. Step 5: Solve for x
    x = 40,423,057.59/7,345.14
  6. Step 6: Final answer
    x = 5,503.37

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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.