Home / 1,156.68-1,585.58-1,145.75

Finding the Fourth Proportional to 1,156.68, 1,585.58 and 1,145.75

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Solution

The fourth proportional to 1,156.68, 1,585.58 and 1,145.75 is: 1,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.68 : 1,585.58 = 1,145.75 : x
  2. Step 2: Convert to fraction form
    1,156.68/1,585.58 = 1,145.75/x
  3. Step 3: Cross multiply
    1,156.68x = 1,585.58 × 1,145.75
  4. Step 4: Simplify right side
    1,156.68x = 1,816,664.63
  5. Step 5: Solve for x
    x = 1,816,664.63/1,156.68
  6. Step 6: Final answer
    x = 1,570.59

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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.