Home / 8,702.18-12,015.33-5,349.56

Finding the Fourth Proportional to 8,702.18, 12,015.33 and 5,349.56

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Solution

The fourth proportional to 8,702.18, 12,015.33 and 5,349.56 is: 7,386.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.18 : 12,015.33 = 5,349.56 : x
  2. Step 2: Convert to fraction form
    8,702.18/12,015.33 = 5,349.56/x
  3. Step 3: Cross multiply
    8,702.18x = 12,015.33 × 5,349.56
  4. Step 4: Simplify right side
    8,702.18x = 64,276,728.75
  5. Step 5: Solve for x
    x = 64,276,728.75/8,702.18
  6. Step 6: Final answer
    x = 7,386.28

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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.