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Finding the Fourth Proportional to 8,487.64, 12,721.74 and 4,595.32

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Solution

The fourth proportional to 8,487.64, 12,721.74 and 4,595.32 is: 6,887.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.64 : 12,721.74 = 4,595.32 : x
  2. Step 2: Convert to fraction form
    8,487.64/12,721.74 = 4,595.32/x
  3. Step 3: Cross multiply
    8,487.64x = 12,721.74 × 4,595.32
  4. Step 4: Simplify right side
    8,487.64x = 58,460,466.26
  5. Step 5: Solve for x
    x = 58,460,466.26/8,487.64
  6. Step 6: Final answer
    x = 6,887.72

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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.