Home / 2,135.10-2,947-1,505.81

Finding the Fourth Proportional to 2,135.10, 2,947 and 1,505.81

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Solution

The fourth proportional to 2,135.10, 2,947 and 1,505.81 is: 2,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.10 : 2,947 = 1,505.81 : x
  2. Step 2: Convert to fraction form
    2,135.10/2,947 = 1,505.81/x
  3. Step 3: Cross multiply
    2,135.10x = 2,947 × 1,505.81
  4. Step 4: Simplify right side
    2,135.10x = 4,437,622.07
  5. Step 5: Solve for x
    x = 4,437,622.07/2,135.10
  6. Step 6: Final answer
    x = 2,078.41

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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.