Home / 3,123.23-4,685.38-1,275.35

Finding the Fourth Proportional to 3,123.23, 4,685.38 and 1,275.35

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Solution

The fourth proportional to 3,123.23, 4,685.38 and 1,275.35 is: 1,913.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.23 : 4,685.38 = 1,275.35 : x
  2. Step 2: Convert to fraction form
    3,123.23/4,685.38 = 1,275.35/x
  3. Step 3: Cross multiply
    3,123.23x = 4,685.38 × 1,275.35
  4. Step 4: Simplify right side
    3,123.23x = 5,975,472.77
  5. Step 5: Solve for x
    x = 5,975,472.77/3,123.23
  6. Step 6: Final answer
    x = 1,913.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.