Home / 2,135.28-2,946.70-1,191.18

Finding the Fourth Proportional to 2,135.28, 2,946.70 and 1,191.18

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Solution

The fourth proportional to 2,135.28, 2,946.70 and 1,191.18 is: 1,643.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.28 : 2,946.70 = 1,191.18 : x
  2. Step 2: Convert to fraction form
    2,135.28/2,946.70 = 1,191.18/x
  3. Step 3: Cross multiply
    2,135.28x = 2,946.70 × 1,191.18
  4. Step 4: Simplify right side
    2,135.28x = 3,510,050.11
  5. Step 5: Solve for x
    x = 3,510,050.11/2,135.28
  6. Step 6: Final answer
    x = 1,643.84

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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.