Home / 1,539.07-2,316.92-1,405.15

Finding the Fourth Proportional to 1,539.07, 2,316.92 and 1,405.15

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Solution

The fourth proportional to 1,539.07, 2,316.92 and 1,405.15 is: 2,115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.07 : 2,316.92 = 1,405.15 : x
  2. Step 2: Convert to fraction form
    1,539.07/2,316.92 = 1,405.15/x
  3. Step 3: Cross multiply
    1,539.07x = 2,316.92 × 1,405.15
  4. Step 4: Simplify right side
    1,539.07x = 3,255,620.14
  5. Step 5: Solve for x
    x = 3,255,620.14/1,539.07
  6. Step 6: Final answer
    x = 2,115.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.