Home / 2,985.12-4,119.54-1,658.95

Finding the Fourth Proportional to 2,985.12, 4,119.54 and 1,658.95

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Solution

The fourth proportional to 2,985.12, 4,119.54 and 1,658.95 is: 2,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.12 : 4,119.54 = 1,658.95 : x
  2. Step 2: Convert to fraction form
    2,985.12/4,119.54 = 1,658.95/x
  3. Step 3: Cross multiply
    2,985.12x = 4,119.54 × 1,658.95
  4. Step 4: Simplify right side
    2,985.12x = 6,834,110.88
  5. Step 5: Solve for x
    x = 6,834,110.88/2,985.12
  6. Step 6: Final answer
    x = 2,289.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.