Home / 8,130.65-11,216.27-5,615.33

Finding the Fourth Proportional to 8,130.65, 11,216.27 and 5,615.33

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Solution

The fourth proportional to 8,130.65, 11,216.27 and 5,615.33 is: 7,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.65 : 11,216.27 = 5,615.33 : x
  2. Step 2: Convert to fraction form
    8,130.65/11,216.27 = 5,615.33/x
  3. Step 3: Cross multiply
    8,130.65x = 11,216.27 × 5,615.33
  4. Step 4: Simplify right side
    8,130.65x = 62,983,015.38
  5. Step 5: Solve for x
    x = 62,983,015.38/8,130.65
  6. Step 6: Final answer
    x = 7,746.37

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Double scale
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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.