Home / 1,339.16-2,009.08-461.72

Finding the Fourth Proportional to 1,339.16, 2,009.08 and 461.72

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Solution

The fourth proportional to 1,339.16, 2,009.08 and 461.72 is: 692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.16 : 2,009.08 = 461.72 : x
  2. Step 2: Convert to fraction form
    1,339.16/2,009.08 = 461.72/x
  3. Step 3: Cross multiply
    1,339.16x = 2,009.08 × 461.72
  4. Step 4: Simplify right side
    1,339.16x = 927,632.42
  5. Step 5: Solve for x
    x = 927,632.42/1,339.16
  6. Step 6: Final answer
    x = 692.70

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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.