Home / 6,390.18-9,587.70-3,271.68

Finding the Fourth Proportional to 6,390.18, 9,587.70 and 3,271.68

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Solution

The fourth proportional to 6,390.18, 9,587.70 and 3,271.68 is: 4,908.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.18 : 9,587.70 = 3,271.68 : x
  2. Step 2: Convert to fraction form
    6,390.18/9,587.70 = 3,271.68/x
  3. Step 3: Cross multiply
    6,390.18x = 9,587.70 × 3,271.68
  4. Step 4: Simplify right side
    6,390.18x = 31,367,886.34
  5. Step 5: Solve for x
    x = 31,367,886.34/6,390.18
  6. Step 6: Final answer
    x = 4,908.76

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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.