Home / 1,930.28-2,895.38-543.70

Finding the Fourth Proportional to 1,930.28, 2,895.38 and 543.70

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Solution

The fourth proportional to 1,930.28, 2,895.38 and 543.70 is: 815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.28 : 2,895.38 = 543.70 : x
  2. Step 2: Convert to fraction form
    1,930.28/2,895.38 = 543.70/x
  3. Step 3: Cross multiply
    1,930.28x = 2,895.38 × 543.70
  4. Step 4: Simplify right side
    1,930.28x = 1,574,218.11
  5. Step 5: Solve for x
    x = 1,574,218.11/1,930.28
  6. Step 6: Final answer
    x = 815.54

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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.