Home / 5,135.11-7,702.63-1,239.50

Finding the Fourth Proportional to 5,135.11, 7,702.63 and 1,239.50

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Solution

The fourth proportional to 5,135.11, 7,702.63 and 1,239.50 is: 1,859.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.11 : 7,702.63 = 1,239.50 : x
  2. Step 2: Convert to fraction form
    5,135.11/7,702.63 = 1,239.50/x
  3. Step 3: Cross multiply
    5,135.11x = 7,702.63 × 1,239.50
  4. Step 4: Simplify right side
    5,135.11x = 9,547,409.89
  5. Step 5: Solve for x
    x = 9,547,409.89/5,135.11
  6. Step 6: Final answer
    x = 1,859.24

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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.