Home / 6,439.72-8,886.93-3,607.07

Finding the Fourth Proportional to 6,439.72, 8,886.93 and 3,607.07

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Solution

The fourth proportional to 6,439.72, 8,886.93 and 3,607.07 is: 4,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.72 : 8,886.93 = 3,607.07 : x
  2. Step 2: Convert to fraction form
    6,439.72/8,886.93 = 3,607.07/x
  3. Step 3: Cross multiply
    6,439.72x = 8,886.93 × 3,607.07
  4. Step 4: Simplify right side
    6,439.72x = 32,055,816.43
  5. Step 5: Solve for x
    x = 32,055,816.43/6,439.72
  6. Step 6: Final answer
    x = 4,977.82

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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.