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Finding the Fourth Proportional to 8,866.80, 13,293.80 and 4,972.40

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Solution

The fourth proportional to 8,866.80, 13,293.80 and 4,972.40 is: 7,455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.80 : 13,293.80 = 4,972.40 : x
  2. Step 2: Convert to fraction form
    8,866.80/13,293.80 = 4,972.40/x
  3. Step 3: Cross multiply
    8,866.80x = 13,293.80 × 4,972.40
  4. Step 4: Simplify right side
    8,866.80x = 66,102,091.12
  5. Step 5: Solve for x
    x = 66,102,091.12/8,866.80
  6. Step 6: Final answer
    x = 7,455.01

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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.