Home / 1,811.36-2,499.70-1,025.40

Finding the Fourth Proportional to 1,811.36, 2,499.70 and 1,025.40

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Solution

The fourth proportional to 1,811.36, 2,499.70 and 1,025.40 is: 1,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.36 : 2,499.70 = 1,025.40 : x
  2. Step 2: Convert to fraction form
    1,811.36/2,499.70 = 1,025.40/x
  3. Step 3: Cross multiply
    1,811.36x = 2,499.70 × 1,025.40
  4. Step 4: Simplify right side
    1,811.36x = 2,563,192.38
  5. Step 5: Solve for x
    x = 2,563,192.38/1,811.36
  6. Step 6: Final answer
    x = 1,415.07

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1.5x scale

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.