Home / 1,359.47-2,038.77-385.31

Finding the Fourth Proportional to 1,359.47, 2,038.77 and 385.31

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Solution

The fourth proportional to 1,359.47, 2,038.77 and 385.31 is: 577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.47 : 2,038.77 = 385.31 : x
  2. Step 2: Convert to fraction form
    1,359.47/2,038.77 = 385.31/x
  3. Step 3: Cross multiply
    1,359.47x = 2,038.77 × 385.31
  4. Step 4: Simplify right side
    1,359.47x = 785,548.27
  5. Step 5: Solve for x
    x = 785,548.27/1,359.47
  6. Step 6: Final answer
    x = 577.84

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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.