Home / 1,972.81-2,722.14-1,133.55

Finding the Fourth Proportional to 1,972.81, 2,722.14 and 1,133.55

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Solution

The fourth proportional to 1,972.81, 2,722.14 and 1,133.55 is: 1,564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.81 : 2,722.14 = 1,133.55 : x
  2. Step 2: Convert to fraction form
    1,972.81/2,722.14 = 1,133.55/x
  3. Step 3: Cross multiply
    1,972.81x = 2,722.14 × 1,133.55
  4. Step 4: Simplify right side
    1,972.81x = 3,085,681.80
  5. Step 5: Solve for x
    x = 3,085,681.80/1,972.81
  6. Step 6: Final answer
    x = 1,564.11

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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.