Home / 3,240.20-4,860.30-2,971.40

Finding the Fourth Proportional to 3,240.20, 4,860.30 and 2,971.40

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Solution

The fourth proportional to 3,240.20, 4,860.30 and 2,971.40 is: 4,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.20 : 4,860.30 = 2,971.40 : x
  2. Step 2: Convert to fraction form
    3,240.20/4,860.30 = 2,971.40/x
  3. Step 3: Cross multiply
    3,240.20x = 4,860.30 × 2,971.40
  4. Step 4: Simplify right side
    3,240.20x = 14,441,895.42
  5. Step 5: Solve for x
    x = 14,441,895.42/3,240.20
  6. Step 6: Final answer
    x = 4,457.10

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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.