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Finding the Fourth Proportional to 1,210.81, 1,816.35 and 882.76

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Solution

The fourth proportional to 1,210.81, 1,816.35 and 882.76 is: 1,324.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.81 : 1,816.35 = 882.76 : x
  2. Step 2: Convert to fraction form
    1,210.81/1,816.35 = 882.76/x
  3. Step 3: Cross multiply
    1,210.81x = 1,816.35 × 882.76
  4. Step 4: Simplify right side
    1,210.81x = 1,603,401.13
  5. Step 5: Solve for x
    x = 1,603,401.13/1,210.81
  6. Step 6: Final answer
    x = 1,324.24

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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.