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Finding the Fourth Proportional to 8,867.78, 12,237.57 and 4,888.80

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Solution

The fourth proportional to 8,867.78, 12,237.57 and 4,888.80 is: 6,746.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.78 : 12,237.57 = 4,888.80 : x
  2. Step 2: Convert to fraction form
    8,867.78/12,237.57 = 4,888.80/x
  3. Step 3: Cross multiply
    8,867.78x = 12,237.57 × 4,888.80
  4. Step 4: Simplify right side
    8,867.78x = 59,827,032.22
  5. Step 5: Solve for x
    x = 59,827,032.22/8,867.78
  6. Step 6: Final answer
    x = 6,746.56

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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.