Home / 2,970.80-4,456.09-1,411.55

Finding the Fourth Proportional to 2,970.80, 4,456.09 and 1,411.55

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Solution

The fourth proportional to 2,970.80, 4,456.09 and 1,411.55 is: 2,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.80 : 4,456.09 = 1,411.55 : x
  2. Step 2: Convert to fraction form
    2,970.80/4,456.09 = 1,411.55/x
  3. Step 3: Cross multiply
    2,970.80x = 4,456.09 × 1,411.55
  4. Step 4: Simplify right side
    2,970.80x = 6,289,993.84
  5. Step 5: Solve for x
    x = 6,289,993.84/2,970.80
  6. Step 6: Final answer
    x = 2,117.27

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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.