Home / 2,124.98-2,931.80-1,240.66

Finding the Fourth Proportional to 2,124.98, 2,931.80 and 1,240.66

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Solution

The fourth proportional to 2,124.98, 2,931.80 and 1,240.66 is: 1,711.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.98 : 2,931.80 = 1,240.66 : x
  2. Step 2: Convert to fraction form
    2,124.98/2,931.80 = 1,240.66/x
  3. Step 3: Cross multiply
    2,124.98x = 2,931.80 × 1,240.66
  4. Step 4: Simplify right side
    2,124.98x = 3,637,366.99
  5. Step 5: Solve for x
    x = 3,637,366.99/2,124.98
  6. Step 6: Final answer
    x = 1,711.72

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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.