Home / 1,572.08-2,169.60-873.50

Finding the Fourth Proportional to 1,572.08, 2,169.60 and 873.50

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Solution

The fourth proportional to 1,572.08, 2,169.60 and 873.50 is: 1,205.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.08 : 2,169.60 = 873.50 : x
  2. Step 2: Convert to fraction form
    1,572.08/2,169.60 = 873.50/x
  3. Step 3: Cross multiply
    1,572.08x = 2,169.60 × 873.50
  4. Step 4: Simplify right side
    1,572.08x = 1,895,145.60
  5. Step 5: Solve for x
    x = 1,895,145.60/1,572.08
  6. Step 6: Final answer
    x = 1,205.50

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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.