Home / 2,420.69-3,340.55-1,372.74

Finding the Fourth Proportional to 2,420.69, 3,340.55 and 1,372.74

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Solution

The fourth proportional to 2,420.69, 3,340.55 and 1,372.74 is: 1,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.69 : 3,340.55 = 1,372.74 : x
  2. Step 2: Convert to fraction form
    2,420.69/3,340.55 = 1,372.74/x
  3. Step 3: Cross multiply
    2,420.69x = 3,340.55 × 1,372.74
  4. Step 4: Simplify right side
    2,420.69x = 4,585,699.74
  5. Step 5: Solve for x
    x = 4,585,699.74/2,420.69
  6. Step 6: Final answer
    x = 1,894.38

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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.