Home / 1,720.56-2,569.19-1,351.20

Finding the Fourth Proportional to 1,720.56, 2,569.19 and 1,351.20

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Solution

The fourth proportional to 1,720.56, 2,569.19 and 1,351.20 is: 2,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.56 : 2,569.19 = 1,351.20 : x
  2. Step 2: Convert to fraction form
    1,720.56/2,569.19 = 1,351.20/x
  3. Step 3: Cross multiply
    1,720.56x = 2,569.19 × 1,351.20
  4. Step 4: Simplify right side
    1,720.56x = 3,471,482.77
  5. Step 5: Solve for x
    x = 3,471,482.77/1,720.56
  6. Step 6: Final answer
    x = 2,017.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.