Home / 1,689.07-2,318.52-1,498.39

Finding the Fourth Proportional to 1,689.07, 2,318.52 and 1,498.39

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Solution

The fourth proportional to 1,689.07, 2,318.52 and 1,498.39 is: 2,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.07 : 2,318.52 = 1,498.39 : x
  2. Step 2: Convert to fraction form
    1,689.07/2,318.52 = 1,498.39/x
  3. Step 3: Cross multiply
    1,689.07x = 2,318.52 × 1,498.39
  4. Step 4: Simplify right side
    1,689.07x = 3,474,047.18
  5. Step 5: Solve for x
    x = 3,474,047.18/1,689.07
  6. Step 6: Final answer
    x = 2,056.78

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1.5x scale

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.