Home / 1,371.39-2,056.95-397.50

Finding the Fourth Proportional to 1,371.39, 2,056.95 and 397.50

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Solution

The fourth proportional to 1,371.39, 2,056.95 and 397.50 is: 596.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.39 : 2,056.95 = 397.50 : x
  2. Step 2: Convert to fraction form
    1,371.39/2,056.95 = 397.50/x
  3. Step 3: Cross multiply
    1,371.39x = 2,056.95 × 397.50
  4. Step 4: Simplify right side
    1,371.39x = 817,637.63
  5. Step 5: Solve for x
    x = 817,637.63/1,371.39
  6. Step 6: Final answer
    x = 596.21

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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.