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Finding the Fourth Proportional to 5,770.40, 8,655.60 and 1,875.20

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Solution

The fourth proportional to 5,770.40, 8,655.60 and 1,875.20 is: 2,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,770.40 : 8,655.60 = 1,875.20 : x
  2. Step 2: Convert to fraction form
    5,770.40/8,655.60 = 1,875.20/x
  3. Step 3: Cross multiply
    5,770.40x = 8,655.60 × 1,875.20
  4. Step 4: Simplify right side
    5,770.40x = 16,230,981.12
  5. Step 5: Solve for x
    x = 16,230,981.12/5,770.40
  6. Step 6: Final answer
    x = 2,812.80

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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.