Home / 7,912.89-11,867.85-3,695.00

Finding the Fourth Proportional to 7,912.89, 11,867.85 and 3,695.00

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Solution

The fourth proportional to 7,912.89, 11,867.85 and 3,695.00 is: 5,541.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.89 : 11,867.85 = 3,695.00 : x
  2. Step 2: Convert to fraction form
    7,912.89/11,867.85 = 3,695.00/x
  3. Step 3: Cross multiply
    7,912.89x = 11,867.85 × 3,695.00
  4. Step 4: Simplify right side
    7,912.89x = 43,851,646.41
  5. Step 5: Solve for x
    x = 43,851,646.41/7,912.89
  6. Step 6: Final answer
    x = 5,541.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.