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Finding the Fourth Proportional to 9,876.48, 14,742.63 and 8,630.88

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Solution

The fourth proportional to 9,876.48, 14,742.63 and 8,630.88 is: 12,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.48 : 14,742.63 = 8,630.88 : x
  2. Step 2: Convert to fraction form
    9,876.48/14,742.63 = 8,630.88/x
  3. Step 3: Cross multiply
    9,876.48x = 14,742.63 × 8,630.88
  4. Step 4: Simplify right side
    9,876.48x = 127,241,870.41
  5. Step 5: Solve for x
    x = 127,241,870.41/9,876.48
  6. Step 6: Final answer
    x = 12,883.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.