Home / 7,143.28-9,862.54-4,455.54

Finding the Fourth Proportional to 7,143.28, 9,862.54 and 4,455.54

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Solution

The fourth proportional to 7,143.28, 9,862.54 and 4,455.54 is: 6,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.28 : 9,862.54 = 4,455.54 : x
  2. Step 2: Convert to fraction form
    7,143.28/9,862.54 = 4,455.54/x
  3. Step 3: Cross multiply
    7,143.28x = 9,862.54 × 4,455.54
  4. Step 4: Simplify right side
    7,143.28x = 43,942,941.47
  5. Step 5: Solve for x
    x = 43,942,941.47/7,143.28
  6. Step 6: Final answer
    x = 6,151.65

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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.