Home / 5,411.60-8,117.40-2,339.60

Finding the Fourth Proportional to 5,411.60, 8,117.40 and 2,339.60

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Solution

The fourth proportional to 5,411.60, 8,117.40 and 2,339.60 is: 3,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.60 : 8,117.40 = 2,339.60 : x
  2. Step 2: Convert to fraction form
    5,411.60/8,117.40 = 2,339.60/x
  3. Step 3: Cross multiply
    5,411.60x = 8,117.40 × 2,339.60
  4. Step 4: Simplify right side
    5,411.60x = 18,991,469.04
  5. Step 5: Solve for x
    x = 18,991,469.04/5,411.60
  6. Step 6: Final answer
    x = 3,509.40

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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.