Home / 1,495.03-2,062.80-905.55

Finding the Fourth Proportional to 1,495.03, 2,062.80 and 905.55

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Solution

The fourth proportional to 1,495.03, 2,062.80 and 905.55 is: 1,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.03 : 2,062.80 = 905.55 : x
  2. Step 2: Convert to fraction form
    1,495.03/2,062.80 = 905.55/x
  3. Step 3: Cross multiply
    1,495.03x = 2,062.80 × 905.55
  4. Step 4: Simplify right side
    1,495.03x = 1,867,953.70
  5. Step 5: Solve for x
    x = 1,867,953.70/1,495.03
  6. Step 6: Final answer
    x = 1,249.45

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1.5x scale

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.