Home / 7,840.42-11,762.61-3,459.10

Finding the Fourth Proportional to 7,840.42, 11,762.61 and 3,459.10

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Solution

The fourth proportional to 7,840.42, 11,762.61 and 3,459.10 is: 5,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.42 : 11,762.61 = 3,459.10 : x
  2. Step 2: Convert to fraction form
    7,840.42/11,762.61 = 3,459.10/x
  3. Step 3: Cross multiply
    7,840.42x = 11,762.61 × 3,459.10
  4. Step 4: Simplify right side
    7,840.42x = 40,688,044.25
  5. Step 5: Solve for x
    x = 40,688,044.25/7,840.42
  6. Step 6: Final answer
    x = 5,189.52

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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.