Home / 1,319.04-1,967.94-1,257.12

Finding the Fourth Proportional to 1,319.04, 1,967.94 and 1,257.12

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Solution

The fourth proportional to 1,319.04, 1,967.94 and 1,257.12 is: 1,875.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.04 : 1,967.94 = 1,257.12 : x
  2. Step 2: Convert to fraction form
    1,319.04/1,967.94 = 1,257.12/x
  3. Step 3: Cross multiply
    1,319.04x = 1,967.94 × 1,257.12
  4. Step 4: Simplify right side
    1,319.04x = 2,473,936.73
  5. Step 5: Solve for x
    x = 2,473,936.73/1,319.04
  6. Step 6: Final answer
    x = 1,875.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.