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Finding the Fourth Proportional to 5,562.81, 7,678.26 and 3,438.99

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Solution

The fourth proportional to 5,562.81, 7,678.26 and 3,438.99 is: 4,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,562.81 : 7,678.26 = 3,438.99 : x
  2. Step 2: Convert to fraction form
    5,562.81/7,678.26 = 3,438.99/x
  3. Step 3: Cross multiply
    5,562.81x = 7,678.26 × 3,438.99
  4. Step 4: Simplify right side
    5,562.81x = 26,405,459.36
  5. Step 5: Solve for x
    x = 26,405,459.36/5,562.81
  6. Step 6: Final answer
    x = 4,746.78

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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.