Home / 7,283.90-10,925.85-3,121.20

Finding the Fourth Proportional to 7,283.90, 10,925.85 and 3,121.20

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Solution

The fourth proportional to 7,283.90, 10,925.85 and 3,121.20 is: 4,681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,283.90 : 10,925.85 = 3,121.20 : x
  2. Step 2: Convert to fraction form
    7,283.90/10,925.85 = 3,121.20/x
  3. Step 3: Cross multiply
    7,283.90x = 10,925.85 × 3,121.20
  4. Step 4: Simplify right side
    7,283.90x = 34,101,798.14
  5. Step 5: Solve for x
    x = 34,101,798.14/7,283.90
  6. Step 6: Final answer
    x = 4,681.81

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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.