Home / 1,918.02-2,876.60-748.05

Finding the Fourth Proportional to 1,918.02, 2,876.60 and 748.05

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Solution

The fourth proportional to 1,918.02, 2,876.60 and 748.05 is: 1,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.02 : 2,876.60 = 748.05 : x
  2. Step 2: Convert to fraction form
    1,918.02/2,876.60 = 748.05/x
  3. Step 3: Cross multiply
    1,918.02x = 2,876.60 × 748.05
  4. Step 4: Simplify right side
    1,918.02x = 2,151,840.63
  5. Step 5: Solve for x
    x = 2,151,840.63/1,918.02
  6. Step 6: Final answer
    x = 1,121.91

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1.5x scale

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.