Home / 2,865.16-4,290.45-1,888.30

Finding the Fourth Proportional to 2,865.16, 4,290.45 and 1,888.30

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Solution

The fourth proportional to 2,865.16, 4,290.45 and 1,888.30 is: 2,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.16 : 4,290.45 = 1,888.30 : x
  2. Step 2: Convert to fraction form
    2,865.16/4,290.45 = 1,888.30/x
  3. Step 3: Cross multiply
    2,865.16x = 4,290.45 × 1,888.30
  4. Step 4: Simplify right side
    2,865.16x = 8,101,667.46
  5. Step 5: Solve for x
    x = 8,101,667.46/2,865.16
  6. Step 6: Final answer
    x = 2,827.65

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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.