Home / 4,753.50-7,130.28-1,290.78

Finding the Fourth Proportional to 4,753.50, 7,130.28 and 1,290.78

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Solution

The fourth proportional to 4,753.50, 7,130.28 and 1,290.78 is: 1,936.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,753.50 : 7,130.28 = 1,290.78 : x
  2. Step 2: Convert to fraction form
    4,753.50/7,130.28 = 1,290.78/x
  3. Step 3: Cross multiply
    4,753.50x = 7,130.28 × 1,290.78
  4. Step 4: Simplify right side
    4,753.50x = 9,203,622.82
  5. Step 5: Solve for x
    x = 9,203,622.82/4,753.50
  6. Step 6: Final answer
    x = 1,936.18

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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.