Home / 1,801.50-2,486.88-1,330.35

Finding the Fourth Proportional to 1,801.50, 2,486.88 and 1,330.35

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Solution

The fourth proportional to 1,801.50, 2,486.88 and 1,330.35 is: 1,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.50 : 2,486.88 = 1,330.35 : x
  2. Step 2: Convert to fraction form
    1,801.50/2,486.88 = 1,330.35/x
  3. Step 3: Cross multiply
    1,801.50x = 2,486.88 × 1,330.35
  4. Step 4: Simplify right side
    1,801.50x = 3,308,420.81
  5. Step 5: Solve for x
    x = 3,308,420.81/1,801.50
  6. Step 6: Final answer
    x = 1,836.48

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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.