Home / 8,259.60-12,389.40-2,103.60

Finding the Fourth Proportional to 8,259.60, 12,389.40 and 2,103.60

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Solution

The fourth proportional to 8,259.60, 12,389.40 and 2,103.60 is: 3,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.60 : 12,389.40 = 2,103.60 : x
  2. Step 2: Convert to fraction form
    8,259.60/12,389.40 = 2,103.60/x
  3. Step 3: Cross multiply
    8,259.60x = 12,389.40 × 2,103.60
  4. Step 4: Simplify right side
    8,259.60x = 26,062,341.84
  5. Step 5: Solve for x
    x = 26,062,341.84/8,259.60
  6. Step 6: Final answer
    x = 3,155.40

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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.