Home / 2,421.30-3,341.40-1,373.40

Finding the Fourth Proportional to 2,421.30, 3,341.40 and 1,373.40

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Solution

The fourth proportional to 2,421.30, 3,341.40 and 1,373.40 is: 1,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.30 : 3,341.40 = 1,373.40 : x
  2. Step 2: Convert to fraction form
    2,421.30/3,341.40 = 1,373.40/x
  3. Step 3: Cross multiply
    2,421.30x = 3,341.40 × 1,373.40
  4. Step 4: Simplify right side
    2,421.30x = 4,589,078.76
  5. Step 5: Solve for x
    x = 4,589,078.76/2,421.30
  6. Step 6: Final answer
    x = 1,895.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.