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Finding the Fourth Proportional to 8,916.32, 13,365.48 and 6,445.10

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Solution

The fourth proportional to 8,916.32, 13,365.48 and 6,445.10 is: 9,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.32 : 13,365.48 = 6,445.10 : x
  2. Step 2: Convert to fraction form
    8,916.32/13,365.48 = 6,445.10/x
  3. Step 3: Cross multiply
    8,916.32x = 13,365.48 × 6,445.10
  4. Step 4: Simplify right side
    8,916.32x = 86,141,855.15
  5. Step 5: Solve for x
    x = 86,141,855.15/8,916.32
  6. Step 6: Final answer
    x = 9,661.14

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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.