Home / 2,930.13-4,043.61-1,688.13

Finding the Fourth Proportional to 2,930.13, 4,043.61 and 1,688.13

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Solution

The fourth proportional to 2,930.13, 4,043.61 and 1,688.13 is: 2,329.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.13 : 4,043.61 = 1,688.13 : x
  2. Step 2: Convert to fraction form
    2,930.13/4,043.61 = 1,688.13/x
  3. Step 3: Cross multiply
    2,930.13x = 4,043.61 × 1,688.13
  4. Step 4: Simplify right side
    2,930.13x = 6,826,139.35
  5. Step 5: Solve for x
    x = 6,826,139.35/2,930.13
  6. Step 6: Final answer
    x = 2,329.64

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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.