Home / 7,557.80-11,315.34-5,087.72

Finding the Fourth Proportional to 7,557.80, 11,315.34 and 5,087.72

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Solution

The fourth proportional to 7,557.80, 11,315.34 and 5,087.72 is: 7,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,557.80 : 11,315.34 = 5,087.72 : x
  2. Step 2: Convert to fraction form
    7,557.80/11,315.34 = 5,087.72/x
  3. Step 3: Cross multiply
    7,557.80x = 11,315.34 × 5,087.72
  4. Step 4: Simplify right side
    7,557.80x = 57,569,281.62
  5. Step 5: Solve for x
    x = 57,569,281.62/7,557.80
  6. Step 6: Final answer
    x = 7,617.20

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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.