Home / 2,154.45-2,972.95-1,210.11

Finding the Fourth Proportional to 2,154.45, 2,972.95 and 1,210.11

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Solution

The fourth proportional to 2,154.45, 2,972.95 and 1,210.11 is: 1,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.45 : 2,972.95 = 1,210.11 : x
  2. Step 2: Convert to fraction form
    2,154.45/2,972.95 = 1,210.11/x
  3. Step 3: Cross multiply
    2,154.45x = 2,972.95 × 1,210.11
  4. Step 4: Simplify right side
    2,154.45x = 3,597,596.52
  5. Step 5: Solve for x
    x = 3,597,596.52/2,154.45
  6. Step 6: Final answer
    x = 1,669.84

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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.