Home / 2,153.35-2,972.91-1,406.98

Finding the Fourth Proportional to 2,153.35, 2,972.91 and 1,406.98

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Solution

The fourth proportional to 2,153.35, 2,972.91 and 1,406.98 is: 1,942.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.35 : 2,972.91 = 1,406.98 : x
  2. Step 2: Convert to fraction form
    2,153.35/2,972.91 = 1,406.98/x
  3. Step 3: Cross multiply
    2,153.35x = 2,972.91 × 1,406.98
  4. Step 4: Simplify right side
    2,153.35x = 4,182,824.91
  5. Step 5: Solve for x
    x = 4,182,824.91/2,153.35
  6. Step 6: Final answer
    x = 1,942.47

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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.