Home / 3,125.12-4,688.36-1,045.31

Finding the Fourth Proportional to 3,125.12, 4,688.36 and 1,045.31

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Solution

The fourth proportional to 3,125.12, 4,688.36 and 1,045.31 is: 1,568.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.12 : 4,688.36 = 1,045.31 : x
  2. Step 2: Convert to fraction form
    3,125.12/4,688.36 = 1,045.31/x
  3. Step 3: Cross multiply
    3,125.12x = 4,688.36 × 1,045.31
  4. Step 4: Simplify right side
    3,125.12x = 4,900,784.37
  5. Step 5: Solve for x
    x = 4,900,784.37/3,125.12
  6. Step 6: Final answer
    x = 1,568.19

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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.