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Finding the Fourth Proportional to 8,437.80, 11,642.36 and 4,899.18

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Solution

The fourth proportional to 8,437.80, 11,642.36 and 4,899.18 is: 6,759.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.80 : 11,642.36 = 4,899.18 : x
  2. Step 2: Convert to fraction form
    8,437.80/11,642.36 = 4,899.18/x
  3. Step 3: Cross multiply
    8,437.80x = 11,642.36 × 4,899.18
  4. Step 4: Simplify right side
    8,437.80x = 57,038,017.26
  5. Step 5: Solve for x
    x = 57,038,017.26/8,437.80
  6. Step 6: Final answer
    x = 6,759.82

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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.