Home / 4,742.30-7,113.45-1,279.55

Finding the Fourth Proportional to 4,742.30, 7,113.45 and 1,279.55

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Solution

The fourth proportional to 4,742.30, 7,113.45 and 1,279.55 is: 1,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.30 : 7,113.45 = 1,279.55 : x
  2. Step 2: Convert to fraction form
    4,742.30/7,113.45 = 1,279.55/x
  3. Step 3: Cross multiply
    4,742.30x = 7,113.45 × 1,279.55
  4. Step 4: Simplify right side
    4,742.30x = 9,101,986.72
  5. Step 5: Solve for x
    x = 9,101,986.72/4,742.30
  6. Step 6: Final answer
    x = 1,919.32

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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.