Home / 2,124.39-2,931.54-1,180.17

Finding the Fourth Proportional to 2,124.39, 2,931.54 and 1,180.17

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Solution

The fourth proportional to 2,124.39, 2,931.54 and 1,180.17 is: 1,628.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.39 : 2,931.54 = 1,180.17 : x
  2. Step 2: Convert to fraction form
    2,124.39/2,931.54 = 1,180.17/x
  3. Step 3: Cross multiply
    2,124.39x = 2,931.54 × 1,180.17
  4. Step 4: Simplify right side
    2,124.39x = 3,459,715.56
  5. Step 5: Solve for x
    x = 3,459,715.56/2,124.39
  6. Step 6: Final answer
    x = 1,628.57

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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.