Home / 1,920.16-2,867.08-1,689.76

Finding the Fourth Proportional to 1,920.16, 2,867.08 and 1,689.76

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Solution

The fourth proportional to 1,920.16, 2,867.08 and 1,689.76 is: 2,523.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.16 : 2,867.08 = 1,689.76 : x
  2. Step 2: Convert to fraction form
    1,920.16/2,867.08 = 1,689.76/x
  3. Step 3: Cross multiply
    1,920.16x = 2,867.08 × 1,689.76
  4. Step 4: Simplify right side
    1,920.16x = 4,844,677.10
  5. Step 5: Solve for x
    x = 4,844,677.10/1,920.16
  6. Step 6: Final answer
    x = 2,523.06

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1.5x scale

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.