Home / 1,689.18-2,521.28-1,569

Finding the Fourth Proportional to 1,689.18, 2,521.28 and 1,569

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Solution

The fourth proportional to 1,689.18, 2,521.28 and 1,569 is: 2,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.18 : 2,521.28 = 1,569 : x
  2. Step 2: Convert to fraction form
    1,689.18/2,521.28 = 1,569/x
  3. Step 3: Cross multiply
    1,689.18x = 2,521.28 × 1,569
  4. Step 4: Simplify right side
    1,689.18x = 3,955,880.48
  5. Step 5: Solve for x
    x = 3,955,880.48/1,689.18
  6. Step 6: Final answer
    x = 2,341.89

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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.