Home / 8,390.19-12,579.75-4,692.81

Finding the Fourth Proportional to 8,390.19, 12,579.75 and 4,692.81

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Solution

The fourth proportional to 8,390.19, 12,579.75 and 4,692.81 is: 7,036.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.19 : 12,579.75 = 4,692.81 : x
  2. Step 2: Convert to fraction form
    8,390.19/12,579.75 = 4,692.81/x
  3. Step 3: Cross multiply
    8,390.19x = 12,579.75 × 4,692.81
  4. Step 4: Simplify right side
    8,390.19x = 59,034,376.60
  5. Step 5: Solve for x
    x = 59,034,376.60/8,390.19
  6. Step 6: Final answer
    x = 7,036.12

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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.