Home / 2,347.68-3,515.28-1,981.60

Finding the Fourth Proportional to 2,347.68, 3,515.28 and 1,981.60

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Solution

The fourth proportional to 2,347.68, 3,515.28 and 1,981.60 is: 2,967.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.68 : 3,515.28 = 1,981.60 : x
  2. Step 2: Convert to fraction form
    2,347.68/3,515.28 = 1,981.60/x
  3. Step 3: Cross multiply
    2,347.68x = 3,515.28 × 1,981.60
  4. Step 4: Simplify right side
    2,347.68x = 6,965,878.85
  5. Step 5: Solve for x
    x = 6,965,878.85/2,347.68
  6. Step 6: Final answer
    x = 2,967.13

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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.