Home / 2,970.24-4,100.80-1,908.48

Finding the Fourth Proportional to 2,970.24, 4,100.80 and 1,908.48

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Solution

The fourth proportional to 2,970.24, 4,100.80 and 1,908.48 is: 2,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.24 : 4,100.80 = 1,908.48 : x
  2. Step 2: Convert to fraction form
    2,970.24/4,100.80 = 1,908.48/x
  3. Step 3: Cross multiply
    2,970.24x = 4,100.80 × 1,908.48
  4. Step 4: Simplify right side
    2,970.24x = 7,826,294.78
  5. Step 5: Solve for x
    x = 7,826,294.78/2,970.24
  6. Step 6: Final answer
    x = 2,634.90

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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.