Home / 2,485.85-3,429.56-1,542.40

Finding the Fourth Proportional to 2,485.85, 3,429.56 and 1,542.40

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Solution

The fourth proportional to 2,485.85, 3,429.56 and 1,542.40 is: 2,127.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.85 : 3,429.56 = 1,542.40 : x
  2. Step 2: Convert to fraction form
    2,485.85/3,429.56 = 1,542.40/x
  3. Step 3: Cross multiply
    2,485.85x = 3,429.56 × 1,542.40
  4. Step 4: Simplify right side
    2,485.85x = 5,289,748.63
  5. Step 5: Solve for x
    x = 5,289,748.63/2,485.85
  6. Step 6: Final answer
    x = 2,127.95

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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.