Home / 7,124.90-10,686.11-1,929.56

Finding the Fourth Proportional to 7,124.90, 10,686.11 and 1,929.56

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Solution

The fourth proportional to 7,124.90, 10,686.11 and 1,929.56 is: 2,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.90 : 10,686.11 = 1,929.56 : x
  2. Step 2: Convert to fraction form
    7,124.90/10,686.11 = 1,929.56/x
  3. Step 3: Cross multiply
    7,124.90x = 10,686.11 × 1,929.56
  4. Step 4: Simplify right side
    7,124.90x = 20,619,507.48
  5. Step 5: Solve for x
    x = 20,619,507.48/7,124.90
  6. Step 6: Final answer
    x = 2,894.01

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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.