Home / 2,015.16-2,780.92-1,130.96

Finding the Fourth Proportional to 2,015.16, 2,780.92 and 1,130.96

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Solution

The fourth proportional to 2,015.16, 2,780.92 and 1,130.96 is: 1,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.16 : 2,780.92 = 1,130.96 : x
  2. Step 2: Convert to fraction form
    2,015.16/2,780.92 = 1,130.96/x
  3. Step 3: Cross multiply
    2,015.16x = 2,780.92 × 1,130.96
  4. Step 4: Simplify right side
    2,015.16x = 3,145,109.28
  5. Step 5: Solve for x
    x = 3,145,109.28/2,015.16
  6. Step 6: Final answer
    x = 1,560.72

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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.