Home / 1,485.18-2,227.79-561.17

Finding the Fourth Proportional to 1,485.18, 2,227.79 and 561.17

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Solution

The fourth proportional to 1,485.18, 2,227.79 and 561.17 is: 841.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.18 : 2,227.79 = 561.17 : x
  2. Step 2: Convert to fraction form
    1,485.18/2,227.79 = 561.17/x
  3. Step 3: Cross multiply
    1,485.18x = 2,227.79 × 561.17
  4. Step 4: Simplify right side
    1,485.18x = 1,250,175.89
  5. Step 5: Solve for x
    x = 1,250,175.89/1,485.18
  6. Step 6: Final answer
    x = 841.77

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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.