Home / 1,457.12-1,997.28-1,436.63

Finding the Fourth Proportional to 1,457.12, 1,997.28 and 1,436.63

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Solution

The fourth proportional to 1,457.12, 1,997.28 and 1,436.63 is: 1,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.12 : 1,997.28 = 1,436.63 : x
  2. Step 2: Convert to fraction form
    1,457.12/1,997.28 = 1,436.63/x
  3. Step 3: Cross multiply
    1,457.12x = 1,997.28 × 1,436.63
  4. Step 4: Simplify right side
    1,457.12x = 2,869,342.38
  5. Step 5: Solve for x
    x = 2,869,342.38/1,457.12
  6. Step 6: Final answer
    x = 1,969.18

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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.