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Finding the Fourth Proportional to 3,556.58, 5,334.86 and 1,913.90

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Solution

The fourth proportional to 3,556.58, 5,334.86 and 1,913.90 is: 2,870.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.58 : 5,334.86 = 1,913.90 : x
  2. Step 2: Convert to fraction form
    3,556.58/5,334.86 = 1,913.90/x
  3. Step 3: Cross multiply
    3,556.58x = 5,334.86 × 1,913.90
  4. Step 4: Simplify right side
    3,556.58x = 10,210,366.66
  5. Step 5: Solve for x
    x = 10,210,366.66/3,556.58
  6. Step 6: Final answer
    x = 2,870.84

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1.5x scale

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.