Home / 1,948.20-2,923.85-853.34

Finding the Fourth Proportional to 1,948.20, 2,923.85 and 853.34

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Solution

The fourth proportional to 1,948.20, 2,923.85 and 853.34 is: 1,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.20 : 2,923.85 = 853.34 : x
  2. Step 2: Convert to fraction form
    1,948.20/2,923.85 = 853.34/x
  3. Step 3: Cross multiply
    1,948.20x = 2,923.85 × 853.34
  4. Step 4: Simplify right side
    1,948.20x = 2,495,020.87
  5. Step 5: Solve for x
    x = 2,495,020.87/1,948.20
  6. Step 6: Final answer
    x = 1,280.68

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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.