Home / 6,288.90-9,429.48-2,128.53

Finding the Fourth Proportional to 6,288.90, 9,429.48 and 2,128.53

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Solution

The fourth proportional to 6,288.90, 9,429.48 and 2,128.53 is: 3,191.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,288.90 : 9,429.48 = 2,128.53 : x
  2. Step 2: Convert to fraction form
    6,288.90/9,429.48 = 2,128.53/x
  3. Step 3: Cross multiply
    6,288.90x = 9,429.48 × 2,128.53
  4. Step 4: Simplify right side
    6,288.90x = 20,070,931.06
  5. Step 5: Solve for x
    x = 20,070,931.06/6,288.90
  6. Step 6: Final answer
    x = 3,191.49

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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.