Home / 2,117.45-2,921.07-1,409.62

Finding the Fourth Proportional to 2,117.45, 2,921.07 and 1,409.62

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Solution

The fourth proportional to 2,117.45, 2,921.07 and 1,409.62 is: 1,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.45 : 2,921.07 = 1,409.62 : x
  2. Step 2: Convert to fraction form
    2,117.45/2,921.07 = 1,409.62/x
  3. Step 3: Cross multiply
    2,117.45x = 2,921.07 × 1,409.62
  4. Step 4: Simplify right side
    2,117.45x = 4,117,598.69
  5. Step 5: Solve for x
    x = 4,117,598.69/2,117.45
  6. Step 6: Final answer
    x = 1,944.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.