Home / 5,685.59-8,529.30-1,987.74

Finding the Fourth Proportional to 5,685.59, 8,529.30 and 1,987.74

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Solution

The fourth proportional to 5,685.59, 8,529.30 and 1,987.74 is: 2,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.59 : 8,529.30 = 1,987.74 : x
  2. Step 2: Convert to fraction form
    5,685.59/8,529.30 = 1,987.74/x
  3. Step 3: Cross multiply
    5,685.59x = 8,529.30 × 1,987.74
  4. Step 4: Simplify right side
    5,685.59x = 16,954,030.78
  5. Step 5: Solve for x
    x = 16,954,030.78/5,685.59
  6. Step 6: Final answer
    x = 2,981.93

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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.