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Finding the Fourth Proportional to 6,445.28, 8,894.43 and 5,916.31

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Solution

The fourth proportional to 6,445.28, 8,894.43 and 5,916.31 is: 8,164.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.28 : 8,894.43 = 5,916.31 : x
  2. Step 2: Convert to fraction form
    6,445.28/8,894.43 = 5,916.31/x
  3. Step 3: Cross multiply
    6,445.28x = 8,894.43 × 5,916.31
  4. Step 4: Simplify right side
    6,445.28x = 52,622,182.92
  5. Step 5: Solve for x
    x = 52,622,182.92/6,445.28
  6. Step 6: Final answer
    x = 8,164.45

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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.