Home / 7,929.47-11,885.62-5,158.12

Finding the Fourth Proportional to 7,929.47, 11,885.62 and 5,158.12

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Solution

The fourth proportional to 7,929.47, 11,885.62 and 5,158.12 is: 7,731.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.47 : 11,885.62 = 5,158.12 : x
  2. Step 2: Convert to fraction form
    7,929.47/11,885.62 = 5,158.12/x
  3. Step 3: Cross multiply
    7,929.47x = 11,885.62 × 5,158.12
  4. Step 4: Simplify right side
    7,929.47x = 61,307,454.23
  5. Step 5: Solve for x
    x = 61,307,454.23/7,929.47
  6. Step 6: Final answer
    x = 7,731.60

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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.