Home / 2,124.10-2,931.36-1,239.82

Finding the Fourth Proportional to 2,124.10, 2,931.36 and 1,239.82

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Solution

The fourth proportional to 2,124.10, 2,931.36 and 1,239.82 is: 1,711.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.10 : 2,931.36 = 1,239.82 : x
  2. Step 2: Convert to fraction form
    2,124.10/2,931.36 = 1,239.82/x
  3. Step 3: Cross multiply
    2,124.10x = 2,931.36 × 1,239.82
  4. Step 4: Simplify right side
    2,124.10x = 3,634,358.76
  5. Step 5: Solve for x
    x = 3,634,358.76/2,124.10
  6. Step 6: Final answer
    x = 1,711.01

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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.