Home / 1,909.47-2,635.08-1,245.93

Finding the Fourth Proportional to 1,909.47, 2,635.08 and 1,245.93

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Solution

The fourth proportional to 1,909.47, 2,635.08 and 1,245.93 is: 1,719.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.47 : 2,635.08 = 1,245.93 : x
  2. Step 2: Convert to fraction form
    1,909.47/2,635.08 = 1,245.93/x
  3. Step 3: Cross multiply
    1,909.47x = 2,635.08 × 1,245.93
  4. Step 4: Simplify right side
    1,909.47x = 3,283,134.93
  5. Step 5: Solve for x
    x = 3,283,134.93/1,909.47
  6. Step 6: Final answer
    x = 1,719.39

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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.