Home / 5,159.40-7,143.30-4,900.20

Finding the Fourth Proportional to 5,159.40, 7,143.30 and 4,900.20

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Solution

The fourth proportional to 5,159.40, 7,143.30 and 4,900.20 is: 6,784.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.40 : 7,143.30 = 4,900.20 : x
  2. Step 2: Convert to fraction form
    5,159.40/7,143.30 = 4,900.20/x
  3. Step 3: Cross multiply
    5,159.40x = 7,143.30 × 4,900.20
  4. Step 4: Simplify right side
    5,159.40x = 35,003,598.66
  5. Step 5: Solve for x
    x = 35,003,598.66/5,159.40
  6. Step 6: Final answer
    x = 6,784.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.