Home / 2,421.78-3,634.04-2,077.32

Finding the Fourth Proportional to 2,421.78, 3,634.04 and 2,077.32

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Solution

The fourth proportional to 2,421.78, 3,634.04 and 2,077.32 is: 3,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.78 : 3,634.04 = 2,077.32 : x
  2. Step 2: Convert to fraction form
    2,421.78/3,634.04 = 2,077.32/x
  3. Step 3: Cross multiply
    2,421.78x = 3,634.04 × 2,077.32
  4. Step 4: Simplify right side
    2,421.78x = 7,549,063.97
  5. Step 5: Solve for x
    x = 7,549,063.97/2,421.78
  6. Step 6: Final answer
    x = 3,117.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.