Home / 7,521.42-11,283.75-3,139.32

Finding the Fourth Proportional to 7,521.42, 11,283.75 and 3,139.32

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Solution

The fourth proportional to 7,521.42, 11,283.75 and 3,139.32 is: 4,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.42 : 11,283.75 = 3,139.32 : x
  2. Step 2: Convert to fraction form
    7,521.42/11,283.75 = 3,139.32/x
  3. Step 3: Cross multiply
    7,521.42x = 11,283.75 × 3,139.32
  4. Step 4: Simplify right side
    7,521.42x = 35,423,302.05
  5. Step 5: Solve for x
    x = 35,423,302.05/7,521.42
  6. Step 6: Final answer
    x = 4,709.66

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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.