Home / 2,421.39-3,319.74-2,377.65

Finding the Fourth Proportional to 2,421.39, 3,319.74 and 2,377.65

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Solution

The fourth proportional to 2,421.39, 3,319.74 and 2,377.65 is: 3,259.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.39 : 3,319.74 = 2,377.65 : x
  2. Step 2: Convert to fraction form
    2,421.39/3,319.74 = 2,377.65/x
  3. Step 3: Cross multiply
    2,421.39x = 3,319.74 × 2,377.65
  4. Step 4: Simplify right side
    2,421.39x = 7,893,179.81
  5. Step 5: Solve for x
    x = 7,893,179.81/2,421.39
  6. Step 6: Final answer
    x = 3,259.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.