Home / 8,702.66-12,012.56-5,521.25

Finding the Fourth Proportional to 8,702.66, 12,012.56 and 5,521.25

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Solution

The fourth proportional to 8,702.66, 12,012.56 and 5,521.25 is: 7,621.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.66 : 12,012.56 = 5,521.25 : x
  2. Step 2: Convert to fraction form
    8,702.66/12,012.56 = 5,521.25/x
  3. Step 3: Cross multiply
    8,702.66x = 12,012.56 × 5,521.25
  4. Step 4: Simplify right side
    8,702.66x = 66,324,319.29
  5. Step 5: Solve for x
    x = 66,324,319.29/8,702.66
  6. Step 6: Final answer
    x = 7,621.15

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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.