Home / 2,156.24-2,975.93-1,317.42

Finding the Fourth Proportional to 2,156.24, 2,975.93 and 1,317.42

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Solution

The fourth proportional to 2,156.24, 2,975.93 and 1,317.42 is: 1,818.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.24 : 2,975.93 = 1,317.42 : x
  2. Step 2: Convert to fraction form
    2,156.24/2,975.93 = 1,317.42/x
  3. Step 3: Cross multiply
    2,156.24x = 2,975.93 × 1,317.42
  4. Step 4: Simplify right side
    2,156.24x = 3,920,543.11
  5. Step 5: Solve for x
    x = 3,920,543.11/2,156.24
  6. Step 6: Final answer
    x = 1,818.24

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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.