Home / 7,124.07-10,686.12-1,929.94

Finding the Fourth Proportional to 7,124.07, 10,686.12 and 1,929.94

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Solution

The fourth proportional to 7,124.07, 10,686.12 and 1,929.94 is: 2,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.07 : 10,686.12 = 1,929.94 : x
  2. Step 2: Convert to fraction form
    7,124.07/10,686.12 = 1,929.94/x
  3. Step 3: Cross multiply
    7,124.07x = 10,686.12 × 1,929.94
  4. Step 4: Simplify right side
    7,124.07x = 20,623,570.43
  5. Step 5: Solve for x
    x = 20,623,570.43/7,124.07
  6. Step 6: Final answer
    x = 2,894.91

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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.