Home / 4,770.40-7,155.60-1,307.68

Finding the Fourth Proportional to 4,770.40, 7,155.60 and 1,307.68

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Solution

The fourth proportional to 4,770.40, 7,155.60 and 1,307.68 is: 1,961.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,770.40 : 7,155.60 = 1,307.68 : x
  2. Step 2: Convert to fraction form
    4,770.40/7,155.60 = 1,307.68/x
  3. Step 3: Cross multiply
    4,770.40x = 7,155.60 × 1,307.68
  4. Step 4: Simplify right side
    4,770.40x = 9,357,235.01
  5. Step 5: Solve for x
    x = 9,357,235.01/4,770.40
  6. Step 6: Final answer
    x = 1,961.52

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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.