Home / 1,192.20-1,788.30-577.11

Finding the Fourth Proportional to 1,192.20, 1,788.30 and 577.11

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Solution

The fourth proportional to 1,192.20, 1,788.30 and 577.11 is: 865.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.20 : 1,788.30 = 577.11 : x
  2. Step 2: Convert to fraction form
    1,192.20/1,788.30 = 577.11/x
  3. Step 3: Cross multiply
    1,192.20x = 1,788.30 × 577.11
  4. Step 4: Simplify right side
    1,192.20x = 1,032,045.81
  5. Step 5: Solve for x
    x = 1,032,045.81/1,192.20
  6. Step 6: Final answer
    x = 865.67

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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.