Home / 1,816.80-2,505.12-1,153.68

Finding the Fourth Proportional to 1,816.80, 2,505.12 and 1,153.68

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Solution

The fourth proportional to 1,816.80, 2,505.12 and 1,153.68 is: 1,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.80 : 2,505.12 = 1,153.68 : x
  2. Step 2: Convert to fraction form
    1,816.80/2,505.12 = 1,153.68/x
  3. Step 3: Cross multiply
    1,816.80x = 2,505.12 × 1,153.68
  4. Step 4: Simplify right side
    1,816.80x = 2,890,106.84
  5. Step 5: Solve for x
    x = 2,890,106.84/1,816.80
  6. Step 6: Final answer
    x = 1,590.77

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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.