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Finding the Fourth Proportional to 5,918.60, 8,878.98 and 3,417.32

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Solution

The fourth proportional to 5,918.60, 8,878.98 and 3,417.32 is: 5,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.60 : 8,878.98 = 3,417.32 : x
  2. Step 2: Convert to fraction form
    5,918.60/8,878.98 = 3,417.32/x
  3. Step 3: Cross multiply
    5,918.60x = 8,878.98 × 3,417.32
  4. Step 4: Simplify right side
    5,918.60x = 30,342,315.93
  5. Step 5: Solve for x
    x = 30,342,315.93/5,918.60
  6. Step 6: Final answer
    x = 5,126.60

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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.