Home / 5,685.36-8,527.80-1,987.56

Finding the Fourth Proportional to 5,685.36, 8,527.80 and 1,987.56

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Solution

The fourth proportional to 5,685.36, 8,527.80 and 1,987.56 is: 2,981.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.36 : 8,527.80 = 1,987.56 : x
  2. Step 2: Convert to fraction form
    5,685.36/8,527.80 = 1,987.56/x
  3. Step 3: Cross multiply
    5,685.36x = 8,527.80 × 1,987.56
  4. Step 4: Simplify right side
    5,685.36x = 16,949,514.17
  5. Step 5: Solve for x
    x = 16,949,514.17/5,685.36
  6. Step 6: Final answer
    x = 2,981.26

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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.