Home / 1,515.56-2,089.53-1,017.81

Finding the Fourth Proportional to 1,515.56, 2,089.53 and 1,017.81

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Solution

The fourth proportional to 1,515.56, 2,089.53 and 1,017.81 is: 1,403.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.56 : 2,089.53 = 1,017.81 : x
  2. Step 2: Convert to fraction form
    1,515.56/2,089.53 = 1,017.81/x
  3. Step 3: Cross multiply
    1,515.56x = 2,089.53 × 1,017.81
  4. Step 4: Simplify right side
    1,515.56x = 2,126,744.53
  5. Step 5: Solve for x
    x = 2,126,744.53/1,515.56
  6. Step 6: Final answer
    x = 1,403.28

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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.