Home / 1,538.09-2,302.42-1,242.84

Finding the Fourth Proportional to 1,538.09, 2,302.42 and 1,242.84

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Solution

The fourth proportional to 1,538.09, 2,302.42 and 1,242.84 is: 1,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.09 : 2,302.42 = 1,242.84 : x
  2. Step 2: Convert to fraction form
    1,538.09/2,302.42 = 1,242.84/x
  3. Step 3: Cross multiply
    1,538.09x = 2,302.42 × 1,242.84
  4. Step 4: Simplify right side
    1,538.09x = 2,861,533.46
  5. Step 5: Solve for x
    x = 2,861,533.46/1,538.09
  6. Step 6: Final answer
    x = 1,860.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.