Home / 5,135.08-7,702.60-1,239.48

Finding the Fourth Proportional to 5,135.08, 7,702.60 and 1,239.48

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Solution

The fourth proportional to 5,135.08, 7,702.60 and 1,239.48 is: 1,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.08 : 7,702.60 = 1,239.48 : x
  2. Step 2: Convert to fraction form
    5,135.08/7,702.60 = 1,239.48/x
  3. Step 3: Cross multiply
    5,135.08x = 7,702.60 × 1,239.48
  4. Step 4: Simplify right side
    5,135.08x = 9,547,218.65
  5. Step 5: Solve for x
    x = 9,547,218.65/5,135.08
  6. Step 6: Final answer
    x = 1,859.22

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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.