Home / 4,719.28-7,078.76-1,432.24

Finding the Fourth Proportional to 4,719.28, 7,078.76 and 1,432.24

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Solution

The fourth proportional to 4,719.28, 7,078.76 and 1,432.24 is: 2,148.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,719.28 : 7,078.76 = 1,432.24 : x
  2. Step 2: Convert to fraction form
    4,719.28/7,078.76 = 1,432.24/x
  3. Step 3: Cross multiply
    4,719.28x = 7,078.76 × 1,432.24
  4. Step 4: Simplify right side
    4,719.28x = 10,138,483.22
  5. Step 5: Solve for x
    x = 10,138,483.22/4,719.28
  6. Step 6: Final answer
    x = 2,148.31

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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.