Home / 2,207.40-3,044.63-1,420.70

Finding the Fourth Proportional to 2,207.40, 3,044.63 and 1,420.70

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Solution

The fourth proportional to 2,207.40, 3,044.63 and 1,420.70 is: 1,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.40 : 3,044.63 = 1,420.70 : x
  2. Step 2: Convert to fraction form
    2,207.40/3,044.63 = 1,420.70/x
  3. Step 3: Cross multiply
    2,207.40x = 3,044.63 × 1,420.70
  4. Step 4: Simplify right side
    2,207.40x = 4,325,483.51
  5. Step 5: Solve for x
    x = 4,325,483.51/2,207.40
  6. Step 6: Final answer
    x = 1,959.54

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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.