Home / 1,898.32-2,829.68-1,689.02

Finding the Fourth Proportional to 1,898.32, 2,829.68 and 1,689.02

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Solution

The fourth proportional to 1,898.32, 2,829.68 and 1,689.02 is: 2,517.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.32 : 2,829.68 = 1,689.02 : x
  2. Step 2: Convert to fraction form
    1,898.32/2,829.68 = 1,689.02/x
  3. Step 3: Cross multiply
    1,898.32x = 2,829.68 × 1,689.02
  4. Step 4: Simplify right side
    1,898.32x = 4,779,386.11
  5. Step 5: Solve for x
    x = 4,779,386.11/1,898.32
  6. Step 6: Final answer
    x = 2,517.69

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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.