Home / 7,345.58-10,136.90-3,988.38

Finding the Fourth Proportional to 7,345.58, 10,136.90 and 3,988.38

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Solution

The fourth proportional to 7,345.58, 10,136.90 and 3,988.38 is: 5,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.58 : 10,136.90 = 3,988.38 : x
  2. Step 2: Convert to fraction form
    7,345.58/10,136.90 = 3,988.38/x
  3. Step 3: Cross multiply
    7,345.58x = 10,136.90 × 3,988.38
  4. Step 4: Simplify right side
    7,345.58x = 40,429,789.28
  5. Step 5: Solve for x
    x = 40,429,789.28/7,345.58
  6. Step 6: Final answer
    x = 5,503.97

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Double scale
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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.