Home / 5,316.89-7,972.70-2,195.78

Finding the Fourth Proportional to 5,316.89, 7,972.70 and 2,195.78

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Solution

The fourth proportional to 5,316.89, 7,972.70 and 2,195.78 is: 3,292.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.89 : 7,972.70 = 2,195.78 : x
  2. Step 2: Convert to fraction form
    5,316.89/7,972.70 = 2,195.78/x
  3. Step 3: Cross multiply
    5,316.89x = 7,972.70 × 2,195.78
  4. Step 4: Simplify right side
    5,316.89x = 17,506,244.36
  5. Step 5: Solve for x
    x = 17,506,244.36/5,316.89
  6. Step 6: Final answer
    x = 3,292.58

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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.