Home / 1,278.02-1,763.19-746.84

Finding the Fourth Proportional to 1,278.02, 1,763.19 and 746.84

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Solution

The fourth proportional to 1,278.02, 1,763.19 and 746.84 is: 1,030.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.02 : 1,763.19 = 746.84 : x
  2. Step 2: Convert to fraction form
    1,278.02/1,763.19 = 746.84/x
  3. Step 3: Cross multiply
    1,278.02x = 1,763.19 × 746.84
  4. Step 4: Simplify right side
    1,278.02x = 1,316,825.23
  5. Step 5: Solve for x
    x = 1,316,825.23/1,278.02
  6. Step 6: Final answer
    x = 1,030.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.