Home / 2,770.80-4,154.28-1,038.96

Finding the Fourth Proportional to 2,770.80, 4,154.28 and 1,038.96

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Solution

The fourth proportional to 2,770.80, 4,154.28 and 1,038.96 is: 1,557.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.80 : 4,154.28 = 1,038.96 : x
  2. Step 2: Convert to fraction form
    2,770.80/4,154.28 = 1,038.96/x
  3. Step 3: Cross multiply
    2,770.80x = 4,154.28 × 1,038.96
  4. Step 4: Simplify right side
    2,770.80x = 4,316,130.75
  5. Step 5: Solve for x
    x = 4,316,130.75/2,770.80
  6. Step 6: Final answer
    x = 1,557.72

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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.