Home / 1,905.02-2,857.72-750.50

Finding the Fourth Proportional to 1,905.02, 2,857.72 and 750.50

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Solution

The fourth proportional to 1,905.02, 2,857.72 and 750.50 is: 1,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.02 : 2,857.72 = 750.50 : x
  2. Step 2: Convert to fraction form
    1,905.02/2,857.72 = 750.50/x
  3. Step 3: Cross multiply
    1,905.02x = 2,857.72 × 750.50
  4. Step 4: Simplify right side
    1,905.02x = 2,144,718.86
  5. Step 5: Solve for x
    x = 2,144,718.86/1,905.02
  6. Step 6: Final answer
    x = 1,125.82

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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.