Home / 2,124.54-2,931.60-1,240.22

Finding the Fourth Proportional to 2,124.54, 2,931.60 and 1,240.22

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Solution

The fourth proportional to 2,124.54, 2,931.60 and 1,240.22 is: 1,711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.54 : 2,931.60 = 1,240.22 : x
  2. Step 2: Convert to fraction form
    2,124.54/2,931.60 = 1,240.22/x
  3. Step 3: Cross multiply
    2,124.54x = 2,931.60 × 1,240.22
  4. Step 4: Simplify right side
    2,124.54x = 3,635,814.29
  5. Step 5: Solve for x
    x = 3,635,814.29/2,124.54
  6. Step 6: Final answer
    x = 1,711.34

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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.