Home / 8,587.14-12,880.71-4,689.42

Finding the Fourth Proportional to 8,587.14, 12,880.71 and 4,689.42

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Solution

The fourth proportional to 8,587.14, 12,880.71 and 4,689.42 is: 7,034.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.14 : 12,880.71 = 4,689.42 : x
  2. Step 2: Convert to fraction form
    8,587.14/12,880.71 = 4,689.42/x
  3. Step 3: Cross multiply
    8,587.14x = 12,880.71 × 4,689.42
  4. Step 4: Simplify right side
    8,587.14x = 60,403,059.09
  5. Step 5: Solve for x
    x = 60,403,059.09/8,587.14
  6. Step 6: Final answer
    x = 7,034.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.