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Finding the Fourth Proportional to 3,556.55, 5,332.55 and 1,478.00

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Solution

The fourth proportional to 3,556.55, 5,332.55 and 1,478.00 is: 2,216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.55 : 5,332.55 = 1,478.00 : x
  2. Step 2: Convert to fraction form
    3,556.55/5,332.55 = 1,478.00/x
  3. Step 3: Cross multiply
    3,556.55x = 5,332.55 × 1,478.00
  4. Step 4: Simplify right side
    3,556.55x = 7,881,514.84
  5. Step 5: Solve for x
    x = 7,881,514.84/3,556.55
  6. Step 6: Final answer
    x = 2,216.05

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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.