Home / 4,765.80-7,148.70-1,255.80

Finding the Fourth Proportional to 4,765.80, 7,148.70 and 1,255.80

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Solution

The fourth proportional to 4,765.80, 7,148.70 and 1,255.80 is: 1,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,765.80 : 7,148.70 = 1,255.80 : x
  2. Step 2: Convert to fraction form
    4,765.80/7,148.70 = 1,255.80/x
  3. Step 3: Cross multiply
    4,765.80x = 7,148.70 × 1,255.80
  4. Step 4: Simplify right side
    4,765.80x = 8,977,337.46
  5. Step 5: Solve for x
    x = 8,977,337.46/4,765.80
  6. Step 6: Final answer
    x = 1,883.70

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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.