Home / 1,591.61-2,195.96-928.22

Finding the Fourth Proportional to 1,591.61, 2,195.96 and 928.22

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Solution

The fourth proportional to 1,591.61, 2,195.96 and 928.22 is: 1,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.61 : 2,195.96 = 928.22 : x
  2. Step 2: Convert to fraction form
    1,591.61/2,195.96 = 928.22/x
  3. Step 3: Cross multiply
    1,591.61x = 2,195.96 × 928.22
  4. Step 4: Simplify right side
    1,591.61x = 2,038,318.37
  5. Step 5: Solve for x
    x = 2,038,318.37/1,591.61
  6. Step 6: Final answer
    x = 1,280.67

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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.