Home / 1,313.02-1,798.83-1,263.78

Finding the Fourth Proportional to 1,313.02, 1,798.83 and 1,263.78

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Solution

The fourth proportional to 1,313.02, 1,798.83 and 1,263.78 is: 1,731.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.02 : 1,798.83 = 1,263.78 : x
  2. Step 2: Convert to fraction form
    1,313.02/1,798.83 = 1,263.78/x
  3. Step 3: Cross multiply
    1,313.02x = 1,798.83 × 1,263.78
  4. Step 4: Simplify right side
    1,313.02x = 2,273,325.38
  5. Step 5: Solve for x
    x = 2,273,325.38/1,313.02
  6. Step 6: Final answer
    x = 1,731.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.