Home / 7,132.78-9,842.73-4,148.40

Finding the Fourth Proportional to 7,132.78, 9,842.73 and 4,148.40

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Solution

The fourth proportional to 7,132.78, 9,842.73 and 4,148.40 is: 5,724.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.78 : 9,842.73 = 4,148.40 : x
  2. Step 2: Convert to fraction form
    7,132.78/9,842.73 = 4,148.40/x
  3. Step 3: Cross multiply
    7,132.78x = 9,842.73 × 4,148.40
  4. Step 4: Simplify right side
    7,132.78x = 40,831,581.13
  5. Step 5: Solve for x
    x = 40,831,581.13/7,132.78
  6. Step 6: Final answer
    x = 5,724.50

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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.