Home / 8,259.60-12,389.40-6,619.35

Finding the Fourth Proportional to 8,259.60, 12,389.40 and 6,619.35

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Solution

The fourth proportional to 8,259.60, 12,389.40 and 6,619.35 is: 9,929.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.60 : 12,389.40 = 6,619.35 : x
  2. Step 2: Convert to fraction form
    8,259.60/12,389.40 = 6,619.35/x
  3. Step 3: Cross multiply
    8,259.60x = 12,389.40 × 6,619.35
  4. Step 4: Simplify right side
    8,259.60x = 82,009,774.89
  5. Step 5: Solve for x
    x = 82,009,774.89/8,259.60
  6. Step 6: Final answer
    x = 9,929.03

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Similar ratio
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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.