Home / 2,865.51-4,291.25-1,985.51

Finding the Fourth Proportional to 2,865.51, 4,291.25 and 1,985.51

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Solution

The fourth proportional to 2,865.51, 4,291.25 and 1,985.51 is: 2,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.51 : 4,291.25 = 1,985.51 : x
  2. Step 2: Convert to fraction form
    2,865.51/4,291.25 = 1,985.51/x
  3. Step 3: Cross multiply
    2,865.51x = 4,291.25 × 1,985.51
  4. Step 4: Simplify right side
    2,865.51x = 8,520,320.59
  5. Step 5: Solve for x
    x = 8,520,320.59/2,865.51
  6. Step 6: Final answer
    x = 2,973.40

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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.