Home / 3,281.98-4,920.99-1,307.86

Finding the Fourth Proportional to 3,281.98, 4,920.99 and 1,307.86

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Solution

The fourth proportional to 3,281.98, 4,920.99 and 1,307.86 is: 1,961.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.98 : 4,920.99 = 1,307.86 : x
  2. Step 2: Convert to fraction form
    3,281.98/4,920.99 = 1,307.86/x
  3. Step 3: Cross multiply
    3,281.98x = 4,920.99 × 1,307.86
  4. Step 4: Simplify right side
    3,281.98x = 6,435,965.98
  5. Step 5: Solve for x
    x = 6,435,965.98/3,281.98
  6. Step 6: Final answer
    x = 1,961.00

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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.