Home / 1,684.06-2,528.76-1,390.92

Finding the Fourth Proportional to 1,684.06, 2,528.76 and 1,390.92

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Solution

The fourth proportional to 1,684.06, 2,528.76 and 1,390.92 is: 2,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.06 : 2,528.76 = 1,390.92 : x
  2. Step 2: Convert to fraction form
    1,684.06/2,528.76 = 1,390.92/x
  3. Step 3: Cross multiply
    1,684.06x = 2,528.76 × 1,390.92
  4. Step 4: Simplify right side
    1,684.06x = 3,517,302.86
  5. Step 5: Solve for x
    x = 3,517,302.86/1,684.06
  6. Step 6: Final answer
    x = 2,088.59

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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.