Home / 5,587.62-7,699.78-3,989.76

Finding the Fourth Proportional to 5,587.62, 7,699.78 and 3,989.76

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Solution

The fourth proportional to 5,587.62, 7,699.78 and 3,989.76 is: 5,497.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,587.62 : 7,699.78 = 3,989.76 : x
  2. Step 2: Convert to fraction form
    5,587.62/7,699.78 = 3,989.76/x
  3. Step 3: Cross multiply
    5,587.62x = 7,699.78 × 3,989.76
  4. Step 4: Simplify right side
    5,587.62x = 30,720,274.25
  5. Step 5: Solve for x
    x = 30,720,274.25/5,587.62
  6. Step 6: Final answer
    x = 5,497.92

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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.