Home / 6,478.02-8,939.47-3,645.56

Finding the Fourth Proportional to 6,478.02, 8,939.47 and 3,645.56

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Solution

The fourth proportional to 6,478.02, 8,939.47 and 3,645.56 is: 5,030.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.02 : 8,939.47 = 3,645.56 : x
  2. Step 2: Convert to fraction form
    6,478.02/8,939.47 = 3,645.56/x
  3. Step 3: Cross multiply
    6,478.02x = 8,939.47 × 3,645.56
  4. Step 4: Simplify right side
    6,478.02x = 32,589,374.25
  5. Step 5: Solve for x
    x = 32,589,374.25/6,478.02
  6. Step 6: Final answer
    x = 5,030.76

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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.