Home / 8,870.40-13,308.48-5,408.64

Finding the Fourth Proportional to 8,870.40, 13,308.48 and 5,408.64

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Solution

The fourth proportional to 8,870.40, 13,308.48 and 5,408.64 is: 8,114.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.40 : 13,308.48 = 5,408.64 : x
  2. Step 2: Convert to fraction form
    8,870.40/13,308.48 = 5,408.64/x
  3. Step 3: Cross multiply
    8,870.40x = 13,308.48 × 5,408.64
  4. Step 4: Simplify right side
    8,870.40x = 71,980,777.27
  5. Step 5: Solve for x
    x = 71,980,777.27/8,870.40
  6. Step 6: Final answer
    x = 8,114.72

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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.