Home / 3,389.15-5,075.80-2,931.95

Finding the Fourth Proportional to 3,389.15, 5,075.80 and 2,931.95

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Solution

The fourth proportional to 3,389.15, 5,075.80 and 2,931.95 is: 4,391.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.15 : 5,075.80 = 2,931.95 : x
  2. Step 2: Convert to fraction form
    3,389.15/5,075.80 = 2,931.95/x
  3. Step 3: Cross multiply
    3,389.15x = 5,075.80 × 2,931.95
  4. Step 4: Simplify right side
    3,389.15x = 14,881,991.81
  5. Step 5: Solve for x
    x = 14,881,991.81/3,389.15
  6. Step 6: Final answer
    x = 4,391.07

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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.