Home / 3,130.13-4,318.38-2,068.40

Finding the Fourth Proportional to 3,130.13, 4,318.38 and 2,068.40

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Solution

The fourth proportional to 3,130.13, 4,318.38 and 2,068.40 is: 2,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.13 : 4,318.38 = 2,068.40 : x
  2. Step 2: Convert to fraction form
    3,130.13/4,318.38 = 2,068.40/x
  3. Step 3: Cross multiply
    3,130.13x = 4,318.38 × 2,068.40
  4. Step 4: Simplify right side
    3,130.13x = 8,932,115.60
  5. Step 5: Solve for x
    x = 8,932,115.60/3,130.13
  6. Step 6: Final answer
    x = 2,853.60

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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.