Home / 1,689.76-2,534.48-1,145.44

Finding the Fourth Proportional to 1,689.76, 2,534.48 and 1,145.44

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Solution

The fourth proportional to 1,689.76, 2,534.48 and 1,145.44 is: 1,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.76 : 2,534.48 = 1,145.44 : x
  2. Step 2: Convert to fraction form
    1,689.76/2,534.48 = 1,145.44/x
  3. Step 3: Cross multiply
    1,689.76x = 2,534.48 × 1,145.44
  4. Step 4: Simplify right side
    1,689.76x = 2,903,094.77
  5. Step 5: Solve for x
    x = 2,903,094.77/1,689.76
  6. Step 6: Final answer
    x = 1,718.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.