Home / 7,639.76-10,545.11-4,987.57

Finding the Fourth Proportional to 7,639.76, 10,545.11 and 4,987.57

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Solution

The fourth proportional to 7,639.76, 10,545.11 and 4,987.57 is: 6,884.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.76 : 10,545.11 = 4,987.57 : x
  2. Step 2: Convert to fraction form
    7,639.76/10,545.11 = 4,987.57/x
  3. Step 3: Cross multiply
    7,639.76x = 10,545.11 × 4,987.57
  4. Step 4: Simplify right side
    7,639.76x = 52,594,460.39
  5. Step 5: Solve for x
    x = 52,594,460.39/7,639.76
  6. Step 6: Final answer
    x = 6,884.31

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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.