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Finding the Fourth Proportional to 8,921.98, 13,368.12 and 5,798.08

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Solution

The fourth proportional to 8,921.98, 13,368.12 and 5,798.08 is: 8,687.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.98 : 13,368.12 = 5,798.08 : x
  2. Step 2: Convert to fraction form
    8,921.98/13,368.12 = 5,798.08/x
  3. Step 3: Cross multiply
    8,921.98x = 13,368.12 × 5,798.08
  4. Step 4: Simplify right side
    8,921.98x = 77,509,429.21
  5. Step 5: Solve for x
    x = 77,509,429.21/8,921.98
  6. Step 6: Final answer
    x = 8,687.47

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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.