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Finding the Fourth Proportional to 9,780.70, 14,659.98 and 4,853.74

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Solution

The fourth proportional to 9,780.70, 14,659.98 and 4,853.74 is: 7,275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.70 : 14,659.98 = 4,853.74 : x
  2. Step 2: Convert to fraction form
    9,780.70/14,659.98 = 4,853.74/x
  3. Step 3: Cross multiply
    9,780.70x = 14,659.98 × 4,853.74
  4. Step 4: Simplify right side
    9,780.70x = 71,155,731.33
  5. Step 5: Solve for x
    x = 71,155,731.33/9,780.70
  6. Step 6: Final answer
    x = 7,275.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.