Home / 1,457.82-2,186.73-1,287.72

Finding the Fourth Proportional to 1,457.82, 2,186.73 and 1,287.72

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Solution

The fourth proportional to 1,457.82, 2,186.73 and 1,287.72 is: 1,931.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.82 : 2,186.73 = 1,287.72 : x
  2. Step 2: Convert to fraction form
    1,457.82/2,186.73 = 1,287.72/x
  3. Step 3: Cross multiply
    1,457.82x = 2,186.73 × 1,287.72
  4. Step 4: Simplify right side
    1,457.82x = 2,815,895.96
  5. Step 5: Solve for x
    x = 2,815,895.96/1,457.82
  6. Step 6: Final answer
    x = 1,931.58

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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.