Home / 8,415.32-11,613.66-4,689.32

Finding the Fourth Proportional to 8,415.32, 11,613.66 and 4,689.32

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Solution

The fourth proportional to 8,415.32, 11,613.66 and 4,689.32 is: 6,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.32 : 11,613.66 = 4,689.32 : x
  2. Step 2: Convert to fraction form
    8,415.32/11,613.66 = 4,689.32/x
  3. Step 3: Cross multiply
    8,415.32x = 11,613.66 × 4,689.32
  4. Step 4: Simplify right side
    8,415.32x = 54,460,168.11
  5. Step 5: Solve for x
    x = 54,460,168.11/8,415.32
  6. Step 6: Final answer
    x = 6,471.55

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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.