Home / 2,421.42-3,605.34-2,321.79

Finding the Fourth Proportional to 2,421.42, 3,605.34 and 2,321.79

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Solution

The fourth proportional to 2,421.42, 3,605.34 and 2,321.79 is: 3,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.42 : 3,605.34 = 2,321.79 : x
  2. Step 2: Convert to fraction form
    2,421.42/3,605.34 = 2,321.79/x
  3. Step 3: Cross multiply
    2,421.42x = 3,605.34 × 2,321.79
  4. Step 4: Simplify right side
    2,421.42x = 8,370,842.36
  5. Step 5: Solve for x
    x = 8,370,842.36/2,421.42
  6. Step 6: Final answer
    x = 3,457.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.