Home / 5,386.96-8,080.26-1,689.40

Finding the Fourth Proportional to 5,386.96, 8,080.26 and 1,689.40

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Solution

The fourth proportional to 5,386.96, 8,080.26 and 1,689.40 is: 2,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.96 : 8,080.26 = 1,689.40 : x
  2. Step 2: Convert to fraction form
    5,386.96/8,080.26 = 1,689.40/x
  3. Step 3: Cross multiply
    5,386.96x = 8,080.26 × 1,689.40
  4. Step 4: Simplify right side
    5,386.96x = 13,650,791.24
  5. Step 5: Solve for x
    x = 13,650,791.24/5,386.96
  6. Step 6: Final answer
    x = 2,534.04

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1.5x scale

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.