Home / 4,221.08-6,330.90-1,298.60

Finding the Fourth Proportional to 4,221.08, 6,330.90 and 1,298.60

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Solution

The fourth proportional to 4,221.08, 6,330.90 and 1,298.60 is: 1,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.08 : 6,330.90 = 1,298.60 : x
  2. Step 2: Convert to fraction form
    4,221.08/6,330.90 = 1,298.60/x
  3. Step 3: Cross multiply
    4,221.08x = 6,330.90 × 1,298.60
  4. Step 4: Simplify right side
    4,221.08x = 8,221,306.74
  5. Step 5: Solve for x
    x = 8,221,306.74/4,221.08
  6. Step 6: Final answer
    x = 1,947.68

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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.