Home / 1,807.28-2,495.34-1,428.61

Finding the Fourth Proportional to 1,807.28, 2,495.34 and 1,428.61

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Solution

The fourth proportional to 1,807.28, 2,495.34 and 1,428.61 is: 1,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.28 : 2,495.34 = 1,428.61 : x
  2. Step 2: Convert to fraction form
    1,807.28/2,495.34 = 1,428.61/x
  3. Step 3: Cross multiply
    1,807.28x = 2,495.34 × 1,428.61
  4. Step 4: Simplify right side
    1,807.28x = 3,564,866.12
  5. Step 5: Solve for x
    x = 3,564,866.12/1,807.28
  6. Step 6: Final answer
    x = 1,972.50

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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.