Home / 8,442.15-11,643.51-7,876.25

Finding the Fourth Proportional to 8,442.15, 11,643.51 and 7,876.25

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Solution

The fourth proportional to 8,442.15, 11,643.51 and 7,876.25 is: 10,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.15 : 11,643.51 = 7,876.25 : x
  2. Step 2: Convert to fraction form
    8,442.15/11,643.51 = 7,876.25/x
  3. Step 3: Cross multiply
    8,442.15x = 11,643.51 × 7,876.25
  4. Step 4: Simplify right side
    8,442.15x = 91,707,195.64
  5. Step 5: Solve for x
    x = 91,707,195.64/8,442.15
  6. Step 6: Final answer
    x = 10,863.01

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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.