Home / 7,787.88-10,739.97-5,130.66

Finding the Fourth Proportional to 7,787.88, 10,739.97 and 5,130.66

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Solution

The fourth proportional to 7,787.88, 10,739.97 and 5,130.66 is: 7,075.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.88 : 10,739.97 = 5,130.66 : x
  2. Step 2: Convert to fraction form
    7,787.88/10,739.97 = 5,130.66/x
  3. Step 3: Cross multiply
    7,787.88x = 10,739.97 × 5,130.66
  4. Step 4: Simplify right side
    7,787.88x = 55,103,134.48
  5. Step 5: Solve for x
    x = 55,103,134.48/7,787.88
  6. Step 6: Final answer
    x = 7,075.50

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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.