Home / 8,647.12-12,988.28-7,630.16

Finding the Fourth Proportional to 8,647.12, 12,988.28 and 7,630.16

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Solution

The fourth proportional to 8,647.12, 12,988.28 and 7,630.16 is: 11,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.12 : 12,988.28 = 7,630.16 : x
  2. Step 2: Convert to fraction form
    8,647.12/12,988.28 = 7,630.16/x
  3. Step 3: Cross multiply
    8,647.12x = 12,988.28 × 7,630.16
  4. Step 4: Simplify right side
    8,647.12x = 99,102,654.52
  5. Step 5: Solve for x
    x = 99,102,654.52/8,647.12
  6. Step 6: Final answer
    x = 11,460.77

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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.