Home / 4,228.40-6,342.84-1,307.12

Finding the Fourth Proportional to 4,228.40, 6,342.84 and 1,307.12

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Solution

The fourth proportional to 4,228.40, 6,342.84 and 1,307.12 is: 1,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,228.40 : 6,342.84 = 1,307.12 : x
  2. Step 2: Convert to fraction form
    4,228.40/6,342.84 = 1,307.12/x
  3. Step 3: Cross multiply
    4,228.40x = 6,342.84 × 1,307.12
  4. Step 4: Simplify right side
    4,228.40x = 8,290,853.02
  5. Step 5: Solve for x
    x = 8,290,853.02/4,228.40
  6. Step 6: Final answer
    x = 1,960.75

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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.