Home / 1,628.51-2,246.22-1,038.78

Finding the Fourth Proportional to 1,628.51, 2,246.22 and 1,038.78

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Solution

The fourth proportional to 1,628.51, 2,246.22 and 1,038.78 is: 1,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.51 : 2,246.22 = 1,038.78 : x
  2. Step 2: Convert to fraction form
    1,628.51/2,246.22 = 1,038.78/x
  3. Step 3: Cross multiply
    1,628.51x = 2,246.22 × 1,038.78
  4. Step 4: Simplify right side
    1,628.51x = 2,333,328.41
  5. Step 5: Solve for x
    x = 2,333,328.41/1,628.51
  6. Step 6: Final answer
    x = 1,432.80

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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.