Home / 8,418.93-11,615.87-5,436.51

Finding the Fourth Proportional to 8,418.93, 11,615.87 and 5,436.51

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Solution

The fourth proportional to 8,418.93, 11,615.87 and 5,436.51 is: 7,500.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.93 : 11,615.87 = 5,436.51 : x
  2. Step 2: Convert to fraction form
    8,418.93/11,615.87 = 5,436.51/x
  3. Step 3: Cross multiply
    8,418.93x = 11,615.87 × 5,436.51
  4. Step 4: Simplify right side
    8,418.93x = 63,149,793.41
  5. Step 5: Solve for x
    x = 63,149,793.41/8,418.93
  6. Step 6: Final answer
    x = 7,500.93

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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.