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Finding the Fourth Proportional to 5,638.99, 8,458.89 and 1,742.89

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Solution

The fourth proportional to 5,638.99, 8,458.89 and 1,742.89 is: 2,614.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.99 : 8,458.89 = 1,742.89 : x
  2. Step 2: Convert to fraction form
    5,638.99/8,458.89 = 1,742.89/x
  3. Step 3: Cross multiply
    5,638.99x = 8,458.89 × 1,742.89
  4. Step 4: Simplify right side
    5,638.99x = 14,742,914.79
  5. Step 5: Solve for x
    x = 14,742,914.79/5,638.99
  6. Step 6: Final answer
    x = 2,614.46

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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.