Home / 4,770.80-7,155.36-1,307.76

Finding the Fourth Proportional to 4,770.80, 7,155.36 and 1,307.76

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Solution

The fourth proportional to 4,770.80, 7,155.36 and 1,307.76 is: 1,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,770.80 : 7,155.36 = 1,307.76 : x
  2. Step 2: Convert to fraction form
    4,770.80/7,155.36 = 1,307.76/x
  3. Step 3: Cross multiply
    4,770.80x = 7,155.36 × 1,307.76
  4. Step 4: Simplify right side
    4,770.80x = 9,357,493.59
  5. Step 5: Solve for x
    x = 9,357,493.59/4,770.80
  6. Step 6: Final answer
    x = 1,961.41

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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.