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Finding the Fourth Proportional to 8,721.95, 12,015.95 and 6,064.74

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Solution

The fourth proportional to 8,721.95, 12,015.95 and 6,064.74 is: 8,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.95 : 12,015.95 = 6,064.74 : x
  2. Step 2: Convert to fraction form
    8,721.95/12,015.95 = 6,064.74/x
  3. Step 3: Cross multiply
    8,721.95x = 12,015.95 × 6,064.74
  4. Step 4: Simplify right side
    8,721.95x = 72,873,582.28
  5. Step 5: Solve for x
    x = 72,873,582.28/8,721.95
  6. Step 6: Final answer
    x = 8,355.20

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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.