Home / 9,120.13-12,585.52-5,087.07

Finding the Fourth Proportional to 9,120.13, 12,585.52 and 5,087.07

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Solution

The fourth proportional to 9,120.13, 12,585.52 and 5,087.07 is: 7,020.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.13 : 12,585.52 = 5,087.07 : x
  2. Step 2: Convert to fraction form
    9,120.13/12,585.52 = 5,087.07/x
  3. Step 3: Cross multiply
    9,120.13x = 12,585.52 × 5,087.07
  4. Step 4: Simplify right side
    9,120.13x = 64,023,421.23
  5. Step 5: Solve for x
    x = 64,023,421.23/9,120.13
  6. Step 6: Final answer
    x = 7,020.02

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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.