Home / 2,015.79-2,780.51-1,269.11

Finding the Fourth Proportional to 2,015.79, 2,780.51 and 1,269.11

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Solution

The fourth proportional to 2,015.79, 2,780.51 and 1,269.11 is: 1,750.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.79 : 2,780.51 = 1,269.11 : x
  2. Step 2: Convert to fraction form
    2,015.79/2,780.51 = 1,269.11/x
  3. Step 3: Cross multiply
    2,015.79x = 2,780.51 × 1,269.11
  4. Step 4: Simplify right side
    2,015.79x = 3,528,752.80
  5. Step 5: Solve for x
    x = 3,528,752.80/2,015.79
  6. Step 6: Final answer
    x = 1,750.56

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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.