Home / 7,345.35-10,136.58-3,988.15

Finding the Fourth Proportional to 7,345.35, 10,136.58 and 3,988.15

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Solution

The fourth proportional to 7,345.35, 10,136.58 and 3,988.15 is: 5,503.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.35 : 10,136.58 = 3,988.15 : x
  2. Step 2: Convert to fraction form
    7,345.35/10,136.58 = 3,988.15/x
  3. Step 3: Cross multiply
    7,345.35x = 10,136.58 × 3,988.15
  4. Step 4: Simplify right side
    7,345.35x = 40,426,201.53
  5. Step 5: Solve for x
    x = 40,426,201.53/7,345.35
  6. Step 6: Final answer
    x = 5,503.65

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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.