Home / 4,217.40-6,326.08-1,139.40

Finding the Fourth Proportional to 4,217.40, 6,326.08 and 1,139.40

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Solution

The fourth proportional to 4,217.40, 6,326.08 and 1,139.40 is: 1,709.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,217.40 : 6,326.08 = 1,139.40 : x
  2. Step 2: Convert to fraction form
    4,217.40/6,326.08 = 1,139.40/x
  3. Step 3: Cross multiply
    4,217.40x = 6,326.08 × 1,139.40
  4. Step 4: Simplify right side
    4,217.40x = 7,207,935.55
  5. Step 5: Solve for x
    x = 7,207,935.55/4,217.40
  6. Step 6: Final answer
    x = 1,709.09

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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.