Home / 7,381.23-11,075.10-3,870.40

Finding the Fourth Proportional to 7,381.23, 11,075.10 and 3,870.40

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Solution

The fourth proportional to 7,381.23, 11,075.10 and 3,870.40 is: 5,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.23 : 11,075.10 = 3,870.40 : x
  2. Step 2: Convert to fraction form
    7,381.23/11,075.10 = 3,870.40/x
  3. Step 3: Cross multiply
    7,381.23x = 11,075.10 × 3,870.40
  4. Step 4: Simplify right side
    7,381.23x = 42,865,067.04
  5. Step 5: Solve for x
    x = 42,865,067.04/7,381.23
  6. Step 6: Final answer
    x = 5,807.31

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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.