Home / 8,747.64-12,071.70-5,211.18

Finding the Fourth Proportional to 8,747.64, 12,071.70 and 5,211.18

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Solution

The fourth proportional to 8,747.64, 12,071.70 and 5,211.18 is: 7,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,747.64 : 12,071.70 = 5,211.18 : x
  2. Step 2: Convert to fraction form
    8,747.64/12,071.70 = 5,211.18/x
  3. Step 3: Cross multiply
    8,747.64x = 12,071.70 × 5,211.18
  4. Step 4: Simplify right side
    8,747.64x = 62,907,801.61
  5. Step 5: Solve for x
    x = 62,907,801.61/8,747.64
  6. Step 6: Final answer
    x = 7,191.40

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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.