Home / 2,459.30-3,688.30-1,225.80

Finding the Fourth Proportional to 2,459.30, 3,688.30 and 1,225.80

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Solution

The fourth proportional to 2,459.30, 3,688.30 and 1,225.80 is: 1,838.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,459.30 : 3,688.30 = 1,225.80 : x
  2. Step 2: Convert to fraction form
    2,459.30/3,688.30 = 1,225.80/x
  3. Step 3: Cross multiply
    2,459.30x = 3,688.30 × 1,225.80
  4. Step 4: Simplify right side
    2,459.30x = 4,521,118.14
  5. Step 5: Solve for x
    x = 4,521,118.14/2,459.30
  6. Step 6: Final answer
    x = 1,838.38

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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.