Home / 2,124.71-2,931.64-1,240.11

Finding the Fourth Proportional to 2,124.71, 2,931.64 and 1,240.11

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Solution

The fourth proportional to 2,124.71, 2,931.64 and 1,240.11 is: 1,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.71 : 2,931.64 = 1,240.11 : x
  2. Step 2: Convert to fraction form
    2,124.71/2,931.64 = 1,240.11/x
  3. Step 3: Cross multiply
    2,124.71x = 2,931.64 × 1,240.11
  4. Step 4: Simplify right side
    2,124.71x = 3,635,559.96
  5. Step 5: Solve for x
    x = 3,635,559.96/2,124.71
  6. Step 6: Final answer
    x = 1,711.09

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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.