Home / 1,585.27-2,378.15-489.37

Finding the Fourth Proportional to 1,585.27, 2,378.15 and 489.37

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Solution

The fourth proportional to 1,585.27, 2,378.15 and 489.37 is: 734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.27 : 2,378.15 = 489.37 : x
  2. Step 2: Convert to fraction form
    1,585.27/2,378.15 = 489.37/x
  3. Step 3: Cross multiply
    1,585.27x = 2,378.15 × 489.37
  4. Step 4: Simplify right side
    1,585.27x = 1,163,795.27
  5. Step 5: Solve for x
    x = 1,163,795.27/1,585.27
  6. Step 6: Final answer
    x = 734.13

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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.