Home / 5,178.60-7,147.08-2,941.17

Finding the Fourth Proportional to 5,178.60, 7,147.08 and 2,941.17

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Solution

The fourth proportional to 5,178.60, 7,147.08 and 2,941.17 is: 4,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.60 : 7,147.08 = 2,941.17 : x
  2. Step 2: Convert to fraction form
    5,178.60/7,147.08 = 2,941.17/x
  3. Step 3: Cross multiply
    5,178.60x = 7,147.08 × 2,941.17
  4. Step 4: Simplify right side
    5,178.60x = 21,020,777.28
  5. Step 5: Solve for x
    x = 21,020,777.28/5,178.60
  6. Step 6: Final answer
    x = 4,059.16

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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.