Home / 2,191.24-3,289.02-1,785.16

Finding the Fourth Proportional to 2,191.24, 3,289.02 and 1,785.16

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Solution

The fourth proportional to 2,191.24, 3,289.02 and 1,785.16 is: 2,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.24 : 3,289.02 = 1,785.16 : x
  2. Step 2: Convert to fraction form
    2,191.24/3,289.02 = 1,785.16/x
  3. Step 3: Cross multiply
    2,191.24x = 3,289.02 × 1,785.16
  4. Step 4: Simplify right side
    2,191.24x = 5,871,426.94
  5. Step 5: Solve for x
    x = 5,871,426.94/2,191.24
  6. Step 6: Final answer
    x = 2,679.50

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Half scale
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Double scale
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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.