Home / 7,728.55-10,665.48-4,371.40

Finding the Fourth Proportional to 7,728.55, 10,665.48 and 4,371.40

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Solution

The fourth proportional to 7,728.55, 10,665.48 and 4,371.40 is: 6,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.55 : 10,665.48 = 4,371.40 : x
  2. Step 2: Convert to fraction form
    7,728.55/10,665.48 = 4,371.40/x
  3. Step 3: Cross multiply
    7,728.55x = 10,665.48 × 4,371.40
  4. Step 4: Simplify right side
    7,728.55x = 46,623,079.27
  5. Step 5: Solve for x
    x = 46,623,079.27/7,728.55
  6. Step 6: Final answer
    x = 6,032.58

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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.