Home / 1,720.81-2,569.55-1,351.45

Finding the Fourth Proportional to 1,720.81, 2,569.55 and 1,351.45

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Solution

The fourth proportional to 1,720.81, 2,569.55 and 1,351.45 is: 2,018.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.81 : 2,569.55 = 1,351.45 : x
  2. Step 2: Convert to fraction form
    1,720.81/2,569.55 = 1,351.45/x
  3. Step 3: Cross multiply
    1,720.81x = 2,569.55 × 1,351.45
  4. Step 4: Simplify right side
    1,720.81x = 3,472,618.35
  5. Step 5: Solve for x
    x = 3,472,618.35/1,720.81
  6. Step 6: Final answer
    x = 2,018.01

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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.