Home / 8,661.06-12,990.65-2,817.18

Finding the Fourth Proportional to 8,661.06, 12,990.65 and 2,817.18

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Solution

The fourth proportional to 8,661.06, 12,990.65 and 2,817.18 is: 4,225.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.06 : 12,990.65 = 2,817.18 : x
  2. Step 2: Convert to fraction form
    8,661.06/12,990.65 = 2,817.18/x
  3. Step 3: Cross multiply
    8,661.06x = 12,990.65 × 2,817.18
  4. Step 4: Simplify right side
    8,661.06x = 36,596,985.28
  5. Step 5: Solve for x
    x = 36,596,985.28/8,661.06
  6. Step 6: Final answer
    x = 4,225.46

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1.5x scale

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.