Home / 1,551.70-2,129.46-1,540.76

Finding the Fourth Proportional to 1,551.70, 2,129.46 and 1,540.76

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Solution

The fourth proportional to 1,551.70, 2,129.46 and 1,540.76 is: 2,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.70 : 2,129.46 = 1,540.76 : x
  2. Step 2: Convert to fraction form
    1,551.70/2,129.46 = 1,540.76/x
  3. Step 3: Cross multiply
    1,551.70x = 2,129.46 × 1,540.76
  4. Step 4: Simplify right side
    1,551.70x = 3,280,986.79
  5. Step 5: Solve for x
    x = 3,280,986.79/1,551.70
  6. Step 6: Final answer
    x = 2,114.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.