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Finding the Fourth Proportional to 8,978.83, 13,459.93 and 4,586.60

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Solution

The fourth proportional to 8,978.83, 13,459.93 and 4,586.60 is: 6,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978.83 : 13,459.93 = 4,586.60 : x
  2. Step 2: Convert to fraction form
    8,978.83/13,459.93 = 4,586.60/x
  3. Step 3: Cross multiply
    8,978.83x = 13,459.93 × 4,586.60
  4. Step 4: Simplify right side
    8,978.83x = 61,735,314.94
  5. Step 5: Solve for x
    x = 61,735,314.94/8,978.83
  6. Step 6: Final answer
    x = 6,875.65

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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.