Home / 1,109.95-1,531.73-612.58

Finding the Fourth Proportional to 1,109.95, 1,531.73 and 612.58

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Solution

The fourth proportional to 1,109.95, 1,531.73 and 612.58 is: 845.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109.95 : 1,531.73 = 612.58 : x
  2. Step 2: Convert to fraction form
    1,109.95/1,531.73 = 612.58/x
  3. Step 3: Cross multiply
    1,109.95x = 1,531.73 × 612.58
  4. Step 4: Simplify right side
    1,109.95x = 938,307.16
  5. Step 5: Solve for x
    x = 938,307.16/1,109.95
  6. Step 6: Final answer
    x = 845.36

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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.