Home / 2,770.02-4,155.30-920.70

Finding the Fourth Proportional to 2,770.02, 4,155.30 and 920.70

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Solution

The fourth proportional to 2,770.02, 4,155.30 and 920.70 is: 1,381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.02 : 4,155.30 = 920.70 : x
  2. Step 2: Convert to fraction form
    2,770.02/4,155.30 = 920.70/x
  3. Step 3: Cross multiply
    2,770.02x = 4,155.30 × 920.70
  4. Step 4: Simplify right side
    2,770.02x = 3,825,784.71
  5. Step 5: Solve for x
    x = 3,825,784.71/2,770.02
  6. Step 6: Final answer
    x = 1,381.14

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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.