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Finding the Fourth Proportional to 3,555, 5,332.76 and 1,090

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Solution

The fourth proportional to 3,555, 5,332.76 and 1,090 is: 1,635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555 : 5,332.76 = 1,090 : x
  2. Step 2: Convert to fraction form
    3,555/5,332.76 = 1,090/x
  3. Step 3: Cross multiply
    3,555x = 5,332.76 × 1,090
  4. Step 4: Simplify right side
    3,555x = 5,812,708.40
  5. Step 5: Solve for x
    x = 5,812,708.40/3,555
  6. Step 6: Final answer
    x = 1,635.08

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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.