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Finding the Fourth Proportional to 9,800.79, 14,701.20 and 2,405.28

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Solution

The fourth proportional to 9,800.79, 14,701.20 and 2,405.28 is: 3,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,800.79 : 14,701.20 = 2,405.28 : x
  2. Step 2: Convert to fraction form
    9,800.79/14,701.20 = 2,405.28/x
  3. Step 3: Cross multiply
    9,800.79x = 14,701.20 × 2,405.28
  4. Step 4: Simplify right side
    9,800.79x = 35,360,502.34
  5. Step 5: Solve for x
    x = 35,360,502.34/9,800.79
  6. Step 6: Final answer
    x = 3,607.92

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Similar ratio
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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.