Home / 1,415.07-2,124.63-868.32

Finding the Fourth Proportional to 1,415.07, 2,124.63 and 868.32

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Solution

The fourth proportional to 1,415.07, 2,124.63 and 868.32 is: 1,303.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.07 : 2,124.63 = 868.32 : x
  2. Step 2: Convert to fraction form
    1,415.07/2,124.63 = 868.32/x
  3. Step 3: Cross multiply
    1,415.07x = 2,124.63 × 868.32
  4. Step 4: Simplify right side
    1,415.07x = 1,844,858.72
  5. Step 5: Solve for x
    x = 1,844,858.72/1,415.07
  6. Step 6: Final answer
    x = 1,303.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.