Home / 8,747.12-12,064.20-5,603.60

Finding the Fourth Proportional to 8,747.12, 12,064.20 and 5,603.60

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Solution

The fourth proportional to 8,747.12, 12,064.20 and 5,603.60 is: 7,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,747.12 : 12,064.20 = 5,603.60 : x
  2. Step 2: Convert to fraction form
    8,747.12/12,064.20 = 5,603.60/x
  3. Step 3: Cross multiply
    8,747.12x = 12,064.20 × 5,603.60
  4. Step 4: Simplify right side
    8,747.12x = 67,602,951.12
  5. Step 5: Solve for x
    x = 67,602,951.12/8,747.12
  6. Step 6: Final answer
    x = 7,728.60

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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.