Home / 6,378.02-8,799.81-3,689.06

Finding the Fourth Proportional to 6,378.02, 8,799.81 and 3,689.06

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Solution

The fourth proportional to 6,378.02, 8,799.81 and 3,689.06 is: 5,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.02 : 8,799.81 = 3,689.06 : x
  2. Step 2: Convert to fraction form
    6,378.02/8,799.81 = 3,689.06/x
  3. Step 3: Cross multiply
    6,378.02x = 8,799.81 × 3,689.06
  4. Step 4: Simplify right side
    6,378.02x = 32,463,027.08
  5. Step 5: Solve for x
    x = 32,463,027.08/6,378.02
  6. Step 6: Final answer
    x = 5,089.83

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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.