Home / 8,419.86-11,618.87-4,643.04

Finding the Fourth Proportional to 8,419.86, 11,618.87 and 4,643.04

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Solution

The fourth proportional to 8,419.86, 11,618.87 and 4,643.04 is: 6,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.86 : 11,618.87 = 4,643.04 : x
  2. Step 2: Convert to fraction form
    8,419.86/11,618.87 = 4,643.04/x
  3. Step 3: Cross multiply
    8,419.86x = 11,618.87 × 4,643.04
  4. Step 4: Simplify right side
    8,419.86x = 53,946,854.95
  5. Step 5: Solve for x
    x = 53,946,854.95/8,419.86
  6. Step 6: Final answer
    x = 6,407.10

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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.