Home / 2,858.40-4,288.14-1,009.30

Finding the Fourth Proportional to 2,858.40, 4,288.14 and 1,009.30

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Solution

The fourth proportional to 2,858.40, 4,288.14 and 1,009.30 is: 1,514.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.40 : 4,288.14 = 1,009.30 : x
  2. Step 2: Convert to fraction form
    2,858.40/4,288.14 = 1,009.30/x
  3. Step 3: Cross multiply
    2,858.40x = 4,288.14 × 1,009.30
  4. Step 4: Simplify right side
    2,858.40x = 4,328,019.70
  5. Step 5: Solve for x
    x = 4,328,019.70/2,858.40
  6. Step 6: Final answer
    x = 1,514.14

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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.