Home / 2,421.90-3,341.40-1,359.50

Finding the Fourth Proportional to 2,421.90, 3,341.40 and 1,359.50

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Solution

The fourth proportional to 2,421.90, 3,341.40 and 1,359.50 is: 1,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.90 : 3,341.40 = 1,359.50 : x
  2. Step 2: Convert to fraction form
    2,421.90/3,341.40 = 1,359.50/x
  3. Step 3: Cross multiply
    2,421.90x = 3,341.40 × 1,359.50
  4. Step 4: Simplify right side
    2,421.90x = 4,542,633.30
  5. Step 5: Solve for x
    x = 4,542,633.30/2,421.90
  6. Step 6: Final answer
    x = 1,875.65

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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.