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Finding the Fourth Proportional to 8,703.12, 12,010.84 and 4,977.04

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Solution

The fourth proportional to 8,703.12, 12,010.84 and 4,977.04 is: 6,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.12 : 12,010.84 = 4,977.04 : x
  2. Step 2: Convert to fraction form
    8,703.12/12,010.84 = 4,977.04/x
  3. Step 3: Cross multiply
    8,703.12x = 12,010.84 × 4,977.04
  4. Step 4: Simplify right side
    8,703.12x = 59,778,431.11
  5. Step 5: Solve for x
    x = 59,778,431.11/8,703.12
  6. Step 6: Final answer
    x = 6,868.62

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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.