Home / 2,858.10-4,287.07-1,125.51

Finding the Fourth Proportional to 2,858.10, 4,287.07 and 1,125.51

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Solution

The fourth proportional to 2,858.10, 4,287.07 and 1,125.51 is: 1,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.10 : 4,287.07 = 1,125.51 : x
  2. Step 2: Convert to fraction form
    2,858.10/4,287.07 = 1,125.51/x
  3. Step 3: Cross multiply
    2,858.10x = 4,287.07 × 1,125.51
  4. Step 4: Simplify right side
    2,858.10x = 4,825,140.16
  5. Step 5: Solve for x
    x = 4,825,140.16/2,858.10
  6. Step 6: Final answer
    x = 1,688.23

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1.5x scale

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.