Home / 3,130.14-4,318.23-1,870.80

Finding the Fourth Proportional to 3,130.14, 4,318.23 and 1,870.80

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Solution

The fourth proportional to 3,130.14, 4,318.23 and 1,870.80 is: 2,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.14 : 4,318.23 = 1,870.80 : x
  2. Step 2: Convert to fraction form
    3,130.14/4,318.23 = 1,870.80/x
  3. Step 3: Cross multiply
    3,130.14x = 4,318.23 × 1,870.80
  4. Step 4: Simplify right side
    3,130.14x = 8,078,544.68
  5. Step 5: Solve for x
    x = 8,078,544.68/3,130.14
  6. Step 6: Final answer
    x = 2,580.89

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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.