Home / 2,239.30-3,090.18-1,307.80

Finding the Fourth Proportional to 2,239.30, 3,090.18 and 1,307.80

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Solution

The fourth proportional to 2,239.30, 3,090.18 and 1,307.80 is: 1,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.30 : 3,090.18 = 1,307.80 : x
  2. Step 2: Convert to fraction form
    2,239.30/3,090.18 = 1,307.80/x
  3. Step 3: Cross multiply
    2,239.30x = 3,090.18 × 1,307.80
  4. Step 4: Simplify right side
    2,239.30x = 4,041,337.40
  5. Step 5: Solve for x
    x = 4,041,337.40/2,239.30
  6. Step 6: Final answer
    x = 1,804.73

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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.