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Finding the Fourth Proportional to 8,917.77, 13,356.08 and 6,403.34

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Solution

The fourth proportional to 8,917.77, 13,356.08 and 6,403.34 is: 9,590.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.77 : 13,356.08 = 6,403.34 : x
  2. Step 2: Convert to fraction form
    8,917.77/13,356.08 = 6,403.34/x
  3. Step 3: Cross multiply
    8,917.77x = 13,356.08 × 6,403.34
  4. Step 4: Simplify right side
    8,917.77x = 85,523,521.31
  5. Step 5: Solve for x
    x = 85,523,521.31/8,917.77
  6. Step 6: Final answer
    x = 9,590.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.