Home / 8,247.21-11,386.34-5,728.51

Finding the Fourth Proportional to 8,247.21, 11,386.34 and 5,728.51

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Solution

The fourth proportional to 8,247.21, 11,386.34 and 5,728.51 is: 7,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,247.21 : 11,386.34 = 5,728.51 : x
  2. Step 2: Convert to fraction form
    8,247.21/11,386.34 = 5,728.51/x
  3. Step 3: Cross multiply
    8,247.21x = 11,386.34 × 5,728.51
  4. Step 4: Simplify right side
    8,247.21x = 65,226,762.55
  5. Step 5: Solve for x
    x = 65,226,762.55/8,247.21
  6. Step 6: Final answer
    x = 7,908.95

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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.