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Finding the Fourth Proportional to 8,985.76, 13,473.76 and 4,830.72

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Solution

The fourth proportional to 8,985.76, 13,473.76 and 4,830.72 is: 7,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.76 : 13,473.76 = 4,830.72 : x
  2. Step 2: Convert to fraction form
    8,985.76/13,473.76 = 4,830.72/x
  3. Step 3: Cross multiply
    8,985.76x = 13,473.76 × 4,830.72
  4. Step 4: Simplify right side
    8,985.76x = 65,087,961.91
  5. Step 5: Solve for x
    x = 65,087,961.91/8,985.76
  6. Step 6: Final answer
    x = 7,243.46

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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.