Home / 7,810.65-11,715.77-3,648.36

Finding the Fourth Proportional to 7,810.65, 11,715.77 and 3,648.36

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Solution

The fourth proportional to 7,810.65, 11,715.77 and 3,648.36 is: 5,472.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.65 : 11,715.77 = 3,648.36 : x
  2. Step 2: Convert to fraction form
    7,810.65/11,715.77 = 3,648.36/x
  3. Step 3: Cross multiply
    7,810.65x = 11,715.77 × 3,648.36
  4. Step 4: Simplify right side
    7,810.65x = 42,743,328.40
  5. Step 5: Solve for x
    x = 42,743,328.40/7,810.65
  6. Step 6: Final answer
    x = 5,472.44

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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.