Home / 9,121.24-12,587.29-4,929.49

Finding the Fourth Proportional to 9,121.24, 12,587.29 and 4,929.49

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Solution

The fourth proportional to 9,121.24, 12,587.29 and 4,929.49 is: 6,802.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.24 : 12,587.29 = 4,929.49 : x
  2. Step 2: Convert to fraction form
    9,121.24/12,587.29 = 4,929.49/x
  3. Step 3: Cross multiply
    9,121.24x = 12,587.29 × 4,929.49
  4. Step 4: Simplify right side
    9,121.24x = 62,048,920.18
  5. Step 5: Solve for x
    x = 62,048,920.18/9,121.24
  6. Step 6: Final answer
    x = 6,802.68

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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.