Home / 5,585.41-8,378.34-1,689.81

Finding the Fourth Proportional to 5,585.41, 8,378.34 and 1,689.81

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Solution

The fourth proportional to 5,585.41, 8,378.34 and 1,689.81 is: 2,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,585.41 : 8,378.34 = 1,689.81 : x
  2. Step 2: Convert to fraction form
    5,585.41/8,378.34 = 1,689.81/x
  3. Step 3: Cross multiply
    5,585.41x = 8,378.34 × 1,689.81
  4. Step 4: Simplify right side
    5,585.41x = 14,157,812.09
  5. Step 5: Solve for x
    x = 14,157,812.09/5,585.41
  6. Step 6: Final answer
    x = 2,534.79

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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.