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Finding the Fourth Proportional to 7,316.70, 10,971.70 and 3,154.72

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Solution

The fourth proportional to 7,316.70, 10,971.70 and 3,154.72 is: 4,730.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,316.70 : 10,971.70 = 3,154.72 : x
  2. Step 2: Convert to fraction form
    7,316.70/10,971.70 = 3,154.72/x
  3. Step 3: Cross multiply
    7,316.70x = 10,971.70 × 3,154.72
  4. Step 4: Simplify right side
    7,316.70x = 34,612,641.42
  5. Step 5: Solve for x
    x = 34,612,641.42/7,316.70
  6. Step 6: Final answer
    x = 4,730.64

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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.