Home / 6,455.22-9,678.51-2,990.58

Finding the Fourth Proportional to 6,455.22, 9,678.51 and 2,990.58

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Solution

The fourth proportional to 6,455.22, 9,678.51 and 2,990.58 is: 4,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.22 : 9,678.51 = 2,990.58 : x
  2. Step 2: Convert to fraction form
    6,455.22/9,678.51 = 2,990.58/x
  3. Step 3: Cross multiply
    6,455.22x = 9,678.51 × 2,990.58
  4. Step 4: Simplify right side
    6,455.22x = 28,944,358.44
  5. Step 5: Solve for x
    x = 28,944,358.44/6,455.22
  6. Step 6: Final answer
    x = 4,483.87

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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.