Home / 8,415.87-11,613.98-4,639.18

Finding the Fourth Proportional to 8,415.87, 11,613.98 and 4,639.18

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Solution

The fourth proportional to 8,415.87, 11,613.98 and 4,639.18 is: 6,402.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.87 : 11,613.98 = 4,639.18 : x
  2. Step 2: Convert to fraction form
    8,415.87/11,613.98 = 4,639.18/x
  3. Step 3: Cross multiply
    8,415.87x = 11,613.98 × 4,639.18
  4. Step 4: Simplify right side
    8,415.87x = 53,879,326.30
  5. Step 5: Solve for x
    x = 53,879,326.30/8,415.87
  6. Step 6: Final answer
    x = 6,402.11

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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.