Home / 2,385.05-3,575.45-1,214.40

Finding the Fourth Proportional to 2,385.05, 3,575.45 and 1,214.40

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Solution

The fourth proportional to 2,385.05, 3,575.45 and 1,214.40 is: 1,820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.05 : 3,575.45 = 1,214.40 : x
  2. Step 2: Convert to fraction form
    2,385.05/3,575.45 = 1,214.40/x
  3. Step 3: Cross multiply
    2,385.05x = 3,575.45 × 1,214.40
  4. Step 4: Simplify right side
    2,385.05x = 4,342,020.41
  5. Step 5: Solve for x
    x = 4,342,020.41/2,385.05
  6. Step 6: Final answer
    x = 1,820.52

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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.