Home / 1,602.32-2,211.28-939.35

Finding the Fourth Proportional to 1,602.32, 2,211.28 and 939.35

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Solution

The fourth proportional to 1,602.32, 2,211.28 and 939.35 is: 1,296.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,602.32 : 2,211.28 = 939.35 : x
  2. Step 2: Convert to fraction form
    1,602.32/2,211.28 = 939.35/x
  3. Step 3: Cross multiply
    1,602.32x = 2,211.28 × 939.35
  4. Step 4: Simplify right side
    1,602.32x = 2,077,169.05
  5. Step 5: Solve for x
    x = 2,077,169.05/1,602.32
  6. Step 6: Final answer
    x = 1,296.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.