Home / 2,860.68-4,291.98-1,128.36

Finding the Fourth Proportional to 2,860.68, 4,291.98 and 1,128.36

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Solution

The fourth proportional to 2,860.68, 4,291.98 and 1,128.36 is: 1,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.68 : 4,291.98 = 1,128.36 : x
  2. Step 2: Convert to fraction form
    2,860.68/4,291.98 = 1,128.36/x
  3. Step 3: Cross multiply
    2,860.68x = 4,291.98 × 1,128.36
  4. Step 4: Simplify right side
    2,860.68x = 4,842,898.55
  5. Step 5: Solve for x
    x = 4,842,898.55/2,860.68
  6. Step 6: Final answer
    x = 1,692.92

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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.