Home / 2,421.65-3,343.49-1,861.09

Finding the Fourth Proportional to 2,421.65, 3,343.49 and 1,861.09

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Solution

The fourth proportional to 2,421.65, 3,343.49 and 1,861.09 is: 2,569.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.65 : 3,343.49 = 1,861.09 : x
  2. Step 2: Convert to fraction form
    2,421.65/3,343.49 = 1,861.09/x
  3. Step 3: Cross multiply
    2,421.65x = 3,343.49 × 1,861.09
  4. Step 4: Simplify right side
    2,421.65x = 6,222,518.14
  5. Step 5: Solve for x
    x = 6,222,518.14/2,421.65
  6. Step 6: Final answer
    x = 2,569.53

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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.