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Finding the Fourth Proportional to 9,760.80, 14,630.40 and 5,602.80

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Solution

The fourth proportional to 9,760.80, 14,630.40 and 5,602.80 is: 8,398.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,760.80 : 14,630.40 = 5,602.80 : x
  2. Step 2: Convert to fraction form
    9,760.80/14,630.40 = 5,602.80/x
  3. Step 3: Cross multiply
    9,760.80x = 14,630.40 × 5,602.80
  4. Step 4: Simplify right side
    9,760.80x = 81,971,205.12
  5. Step 5: Solve for x
    x = 81,971,205.12/9,760.80
  6. Step 6: Final answer
    x = 8,398.00

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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.