Home / 4,228.60-6,342.90-1,307.20

Finding the Fourth Proportional to 4,228.60, 6,342.90 and 1,307.20

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Solution

The fourth proportional to 4,228.60, 6,342.90 and 1,307.20 is: 1,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,228.60 : 6,342.90 = 1,307.20 : x
  2. Step 2: Convert to fraction form
    4,228.60/6,342.90 = 1,307.20/x
  3. Step 3: Cross multiply
    4,228.60x = 6,342.90 × 1,307.20
  4. Step 4: Simplify right side
    4,228.60x = 8,291,438.88
  5. Step 5: Solve for x
    x = 8,291,438.88/4,228.60
  6. Step 6: Final answer
    x = 1,960.80

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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.