Home / 5,386.75-8,080.13-1,689.27

Finding the Fourth Proportional to 5,386.75, 8,080.13 and 1,689.27

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Solution

The fourth proportional to 5,386.75, 8,080.13 and 1,689.27 is: 2,533.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.75 : 8,080.13 = 1,689.27 : x
  2. Step 2: Convert to fraction form
    5,386.75/8,080.13 = 1,689.27/x
  3. Step 3: Cross multiply
    5,386.75x = 8,080.13 × 1,689.27
  4. Step 4: Simplify right side
    5,386.75x = 13,649,521.21
  5. Step 5: Solve for x
    x = 13,649,521.21/5,386.75
  6. Step 6: Final answer
    x = 2,533.91

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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.