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Finding the Fourth Proportional to 8,779.76, 12,114.75 and 4,951.23

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Solution

The fourth proportional to 8,779.76, 12,114.75 and 4,951.23 is: 6,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.76 : 12,114.75 = 4,951.23 : x
  2. Step 2: Convert to fraction form
    8,779.76/12,114.75 = 4,951.23/x
  3. Step 3: Cross multiply
    8,779.76x = 12,114.75 × 4,951.23
  4. Step 4: Simplify right side
    8,779.76x = 59,982,913.64
  5. Step 5: Solve for x
    x = 59,982,913.64/8,779.76
  6. Step 6: Final answer
    x = 6,831.95

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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.