Home / 9,865.65-13,614.38-5,389.28

Finding the Fourth Proportional to 9,865.65, 13,614.38 and 5,389.28

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Solution

The fourth proportional to 9,865.65, 13,614.38 and 5,389.28 is: 7,437.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.65 : 13,614.38 = 5,389.28 : x
  2. Step 2: Convert to fraction form
    9,865.65/13,614.38 = 5,389.28/x
  3. Step 3: Cross multiply
    9,865.65x = 13,614.38 × 5,389.28
  4. Step 4: Simplify right side
    9,865.65x = 73,371,758.67
  5. Step 5: Solve for x
    x = 73,371,758.67/9,865.65
  6. Step 6: Final answer
    x = 7,437.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.