Home / 1,455.90-2,178.72-1,192.74

Finding the Fourth Proportional to 1,455.90, 2,178.72 and 1,192.74

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Solution

The fourth proportional to 1,455.90, 2,178.72 and 1,192.74 is: 1,784.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.90 : 2,178.72 = 1,192.74 : x
  2. Step 2: Convert to fraction form
    1,455.90/2,178.72 = 1,192.74/x
  3. Step 3: Cross multiply
    1,455.90x = 2,178.72 × 1,192.74
  4. Step 4: Simplify right side
    1,455.90x = 2,598,646.49
  5. Step 5: Solve for x
    x = 2,598,646.49/1,455.90
  6. Step 6: Final answer
    x = 1,784.91

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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.