Home / 1,574.24-2,172.15-875.61

Finding the Fourth Proportional to 1,574.24, 2,172.15 and 875.61

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Solution

The fourth proportional to 1,574.24, 2,172.15 and 875.61 is: 1,208.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.24 : 2,172.15 = 875.61 : x
  2. Step 2: Convert to fraction form
    1,574.24/2,172.15 = 875.61/x
  3. Step 3: Cross multiply
    1,574.24x = 2,172.15 × 875.61
  4. Step 4: Simplify right side
    1,574.24x = 1,901,956.26
  5. Step 5: Solve for x
    x = 1,901,956.26/1,574.24
  6. Step 6: Final answer
    x = 1,208.18

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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.