Home / 1,588.61-2,378.86-939.81

Finding the Fourth Proportional to 1,588.61, 2,378.86 and 939.81

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Solution

The fourth proportional to 1,588.61, 2,378.86 and 939.81 is: 1,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.61 : 2,378.86 = 939.81 : x
  2. Step 2: Convert to fraction form
    1,588.61/2,378.86 = 939.81/x
  3. Step 3: Cross multiply
    1,588.61x = 2,378.86 × 939.81
  4. Step 4: Simplify right side
    1,588.61x = 2,235,671.72
  5. Step 5: Solve for x
    x = 2,235,671.72/1,588.61
  6. Step 6: Final answer
    x = 1,407.31

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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.