Home / 1,567.20-2,162.70-903.96

Finding the Fourth Proportional to 1,567.20, 2,162.70 and 903.96

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Solution

The fourth proportional to 1,567.20, 2,162.70 and 903.96 is: 1,247.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.20 : 2,162.70 = 903.96 : x
  2. Step 2: Convert to fraction form
    1,567.20/2,162.70 = 903.96/x
  3. Step 3: Cross multiply
    1,567.20x = 2,162.70 × 903.96
  4. Step 4: Simplify right side
    1,567.20x = 1,954,994.29
  5. Step 5: Solve for x
    x = 1,954,994.29/1,567.20
  6. Step 6: Final answer
    x = 1,247.44

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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.