Home / 1,639.02-2,457.72-543.24

Finding the Fourth Proportional to 1,639.02, 2,457.72 and 543.24

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Solution

The fourth proportional to 1,639.02, 2,457.72 and 543.24 is: 814.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.02 : 2,457.72 = 543.24 : x
  2. Step 2: Convert to fraction form
    1,639.02/2,457.72 = 543.24/x
  3. Step 3: Cross multiply
    1,639.02x = 2,457.72 × 543.24
  4. Step 4: Simplify right side
    1,639.02x = 1,335,131.81
  5. Step 5: Solve for x
    x = 1,335,131.81/1,639.02
  6. Step 6: Final answer
    x = 814.59

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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.