Home / 9,072.34-12,510.62-8,543.20

Finding the Fourth Proportional to 9,072.34, 12,510.62 and 8,543.20

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Solution

The fourth proportional to 9,072.34, 12,510.62 and 8,543.20 is: 11,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,072.34 : 12,510.62 = 8,543.20 : x
  2. Step 2: Convert to fraction form
    9,072.34/12,510.62 = 8,543.20/x
  3. Step 3: Cross multiply
    9,072.34x = 12,510.62 × 8,543.20
  4. Step 4: Simplify right side
    9,072.34x = 106,880,728.78
  5. Step 5: Solve for x
    x = 106,880,728.78/9,072.34
  6. Step 6: Final answer
    x = 11,780.94

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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.