Home / 1,631.29-2,444.79-891.23

Finding the Fourth Proportional to 1,631.29, 2,444.79 and 891.23

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Solution

The fourth proportional to 1,631.29, 2,444.79 and 891.23 is: 1,335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.29 : 2,444.79 = 891.23 : x
  2. Step 2: Convert to fraction form
    1,631.29/2,444.79 = 891.23/x
  3. Step 3: Cross multiply
    1,631.29x = 2,444.79 × 891.23
  4. Step 4: Simplify right side
    1,631.29x = 2,178,853.51
  5. Step 5: Solve for x
    x = 2,178,853.51/1,631.29
  6. Step 6: Final answer
    x = 1,335.66

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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.