Home / 1,308.48-1,795.20-1,274.40

Finding the Fourth Proportional to 1,308.48, 1,795.20 and 1,274.40

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Solution

The fourth proportional to 1,308.48, 1,795.20 and 1,274.40 is: 1,748.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.48 : 1,795.20 = 1,274.40 : x
  2. Step 2: Convert to fraction form
    1,308.48/1,795.20 = 1,274.40/x
  3. Step 3: Cross multiply
    1,308.48x = 1,795.20 × 1,274.40
  4. Step 4: Simplify right side
    1,308.48x = 2,287,802.88
  5. Step 5: Solve for x
    x = 2,287,802.88/1,308.48
  6. Step 6: Final answer
    x = 1,748.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.