Home / 9,121.10-12,587.11-4,929.35

Finding the Fourth Proportional to 9,121.10, 12,587.11 and 4,929.35

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Solution

The fourth proportional to 9,121.10, 12,587.11 and 4,929.35 is: 6,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.10 : 12,587.11 = 4,929.35 : x
  2. Step 2: Convert to fraction form
    9,121.10/12,587.11 = 4,929.35/x
  3. Step 3: Cross multiply
    9,121.10x = 12,587.11 × 4,929.35
  4. Step 4: Simplify right side
    9,121.10x = 62,046,207.74
  5. Step 5: Solve for x
    x = 62,046,207.74/9,121.10
  6. Step 6: Final answer
    x = 6,802.50

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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.