Home / 1,811.40-2,499.72-1,025.45

Finding the Fourth Proportional to 1,811.40, 2,499.72 and 1,025.45

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Solution

The fourth proportional to 1,811.40, 2,499.72 and 1,025.45 is: 1,415.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.40 : 2,499.72 = 1,025.45 : x
  2. Step 2: Convert to fraction form
    1,811.40/2,499.72 = 1,025.45/x
  3. Step 3: Cross multiply
    1,811.40x = 2,499.72 × 1,025.45
  4. Step 4: Simplify right side
    1,811.40x = 2,563,337.87
  5. Step 5: Solve for x
    x = 2,563,337.87/1,811.40
  6. Step 6: Final answer
    x = 1,415.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.