Home / 8,702.24-12,008.40-5,166.32

Finding the Fourth Proportional to 8,702.24, 12,008.40 and 5,166.32

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Solution

The fourth proportional to 8,702.24, 12,008.40 and 5,166.32 is: 7,129.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.24 : 12,008.40 = 5,166.32 : x
  2. Step 2: Convert to fraction form
    8,702.24/12,008.40 = 5,166.32/x
  3. Step 3: Cross multiply
    8,702.24x = 12,008.40 × 5,166.32
  4. Step 4: Simplify right side
    8,702.24x = 62,039,237.09
  5. Step 5: Solve for x
    x = 62,039,237.09/8,702.24
  6. Step 6: Final answer
    x = 7,129.11

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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.