Home / 2,987.34-4,485.45-2,934.90

Finding the Fourth Proportional to 2,987.34, 4,485.45 and 2,934.90

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Solution

The fourth proportional to 2,987.34, 4,485.45 and 2,934.90 is: 4,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.34 : 4,485.45 = 2,934.90 : x
  2. Step 2: Convert to fraction form
    2,987.34/4,485.45 = 2,934.90/x
  3. Step 3: Cross multiply
    2,987.34x = 4,485.45 × 2,934.90
  4. Step 4: Simplify right side
    2,987.34x = 13,164,347.21
  5. Step 5: Solve for x
    x = 13,164,347.21/2,987.34
  6. Step 6: Final answer
    x = 4,406.71

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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.