Home / 7,728.21-10,665.13-4,370.87

Finding the Fourth Proportional to 7,728.21, 10,665.13 and 4,370.87

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Solution

The fourth proportional to 7,728.21, 10,665.13 and 4,370.87 is: 6,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.21 : 10,665.13 = 4,370.87 : x
  2. Step 2: Convert to fraction form
    7,728.21/10,665.13 = 4,370.87/x
  3. Step 3: Cross multiply
    7,728.21x = 10,665.13 × 4,370.87
  4. Step 4: Simplify right side
    7,728.21x = 46,615,821.58
  5. Step 5: Solve for x
    x = 46,615,821.58/7,728.21
  6. Step 6: Final answer
    x = 6,031.90

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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.