Home / 1,720.02-2,373.75-1,279.20

Finding the Fourth Proportional to 1,720.02, 2,373.75 and 1,279.20

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Solution

The fourth proportional to 1,720.02, 2,373.75 and 1,279.20 is: 1,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.02 : 2,373.75 = 1,279.20 : x
  2. Step 2: Convert to fraction form
    1,720.02/2,373.75 = 1,279.20/x
  3. Step 3: Cross multiply
    1,720.02x = 2,373.75 × 1,279.20
  4. Step 4: Simplify right side
    1,720.02x = 3,036,501
  5. Step 5: Solve for x
    x = 3,036,501/1,720.02
  6. Step 6: Final answer
    x = 1,765.39

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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.