Home / 3,130.36-4,697.91-2,140.81

Finding the Fourth Proportional to 3,130.36, 4,697.91 and 2,140.81

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Solution

The fourth proportional to 3,130.36, 4,697.91 and 2,140.81 is: 3,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.36 : 4,697.91 = 2,140.81 : x
  2. Step 2: Convert to fraction form
    3,130.36/4,697.91 = 2,140.81/x
  3. Step 3: Cross multiply
    3,130.36x = 4,697.91 × 2,140.81
  4. Step 4: Simplify right side
    3,130.36x = 10,057,332.71
  5. Step 5: Solve for x
    x = 10,057,332.71/3,130.36
  6. Step 6: Final answer
    x = 3,212.84

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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.