Home / 2,980.96-4,471.53-1,421.13

Finding the Fourth Proportional to 2,980.96, 4,471.53 and 1,421.13

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Solution

The fourth proportional to 2,980.96, 4,471.53 and 1,421.13 is: 2,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.96 : 4,471.53 = 1,421.13 : x
  2. Step 2: Convert to fraction form
    2,980.96/4,471.53 = 1,421.13/x
  3. Step 3: Cross multiply
    2,980.96x = 4,471.53 × 1,421.13
  4. Step 4: Simplify right side
    2,980.96x = 6,354,625.43
  5. Step 5: Solve for x
    x = 6,354,625.43/2,980.96
  6. Step 6: Final answer
    x = 2,131.74

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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.