Home / 1,316.40-1,811.52-1,167.36

Finding the Fourth Proportional to 1,316.40, 1,811.52 and 1,167.36

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Solution

The fourth proportional to 1,316.40, 1,811.52 and 1,167.36 is: 1,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.40 : 1,811.52 = 1,167.36 : x
  2. Step 2: Convert to fraction form
    1,316.40/1,811.52 = 1,167.36/x
  3. Step 3: Cross multiply
    1,316.40x = 1,811.52 × 1,167.36
  4. Step 4: Simplify right side
    1,316.40x = 2,114,695.99
  5. Step 5: Solve for x
    x = 2,114,695.99/1,316.40
  6. Step 6: Final answer
    x = 1,606.42

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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.