Home / 9,078.92-12,528.60-5,100.20

Finding the Fourth Proportional to 9,078.92, 12,528.60 and 5,100.20

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Solution

The fourth proportional to 9,078.92, 12,528.60 and 5,100.20 is: 7,038.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.92 : 12,528.60 = 5,100.20 : x
  2. Step 2: Convert to fraction form
    9,078.92/12,528.60 = 5,100.20/x
  3. Step 3: Cross multiply
    9,078.92x = 12,528.60 × 5,100.20
  4. Step 4: Simplify right side
    9,078.92x = 63,898,365.72
  5. Step 5: Solve for x
    x = 63,898,365.72/9,078.92
  6. Step 6: Final answer
    x = 7,038.10

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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.