Home / 9,139.89-13,707.88-2,900.46

Finding the Fourth Proportional to 9,139.89, 13,707.88 and 2,900.46

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Solution

The fourth proportional to 9,139.89, 13,707.88 and 2,900.46 is: 4,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.89 : 13,707.88 = 2,900.46 : x
  2. Step 2: Convert to fraction form
    9,139.89/13,707.88 = 2,900.46/x
  3. Step 3: Cross multiply
    9,139.89x = 13,707.88 × 2,900.46
  4. Step 4: Simplify right side
    9,139.89x = 39,759,140.99
  5. Step 5: Solve for x
    x = 39,759,140.99/9,139.89
  6. Step 6: Final answer
    x = 4,350.07

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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.