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Finding the Fourth Proportional to 8,607, 11,878.38 and 4,881.72

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Solution

The fourth proportional to 8,607, 11,878.38 and 4,881.72 is: 6,737.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607 : 11,878.38 = 4,881.72 : x
  2. Step 2: Convert to fraction form
    8,607/11,878.38 = 4,881.72/x
  3. Step 3: Cross multiply
    8,607x = 11,878.38 × 4,881.72
  4. Step 4: Simplify right side
    8,607x = 57,986,925.21
  5. Step 5: Solve for x
    x = 57,986,925.21/8,607
  6. Step 6: Final answer
    x = 6,737.18

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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.