Home / 4,038.56-5,569.08-2,780.72

Finding the Fourth Proportional to 4,038.56, 5,569.08 and 2,780.72

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Solution

The fourth proportional to 4,038.56, 5,569.08 and 2,780.72 is: 3,834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,038.56 : 5,569.08 = 2,780.72 : x
  2. Step 2: Convert to fraction form
    4,038.56/5,569.08 = 2,780.72/x
  3. Step 3: Cross multiply
    4,038.56x = 5,569.08 × 2,780.72
  4. Step 4: Simplify right side
    4,038.56x = 15,486,052.14
  5. Step 5: Solve for x
    x = 15,486,052.14/4,038.56
  6. Step 6: Final answer
    x = 3,834.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.