Home / 2,161.32-2,981.70-1,415.04

Finding the Fourth Proportional to 2,161.32, 2,981.70 and 1,415.04

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Solution

The fourth proportional to 2,161.32, 2,981.70 and 1,415.04 is: 1,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.32 : 2,981.70 = 1,415.04 : x
  2. Step 2: Convert to fraction form
    2,161.32/2,981.70 = 1,415.04/x
  3. Step 3: Cross multiply
    2,161.32x = 2,981.70 × 1,415.04
  4. Step 4: Simplify right side
    2,161.32x = 4,219,224.77
  5. Step 5: Solve for x
    x = 4,219,224.77/2,161.32
  6. Step 6: Final answer
    x = 1,952.15

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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.