Home / 1,281.10-1,922.23-578.36

Finding the Fourth Proportional to 1,281.10, 1,922.23 and 578.36

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Solution

The fourth proportional to 1,281.10, 1,922.23 and 578.36 is: 867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.10 : 1,922.23 = 578.36 : x
  2. Step 2: Convert to fraction form
    1,281.10/1,922.23 = 578.36/x
  3. Step 3: Cross multiply
    1,281.10x = 1,922.23 × 578.36
  4. Step 4: Simplify right side
    1,281.10x = 1,111,740.17
  5. Step 5: Solve for x
    x = 1,111,740.17/1,281.10
  6. Step 6: Final answer
    x = 867.80

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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.