Home / 3,875.40-5,809.38-1,925.70

Finding the Fourth Proportional to 3,875.40, 5,809.38 and 1,925.70

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Solution

The fourth proportional to 3,875.40, 5,809.38 and 1,925.70 is: 2,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.40 : 5,809.38 = 1,925.70 : x
  2. Step 2: Convert to fraction form
    3,875.40/5,809.38 = 1,925.70/x
  3. Step 3: Cross multiply
    3,875.40x = 5,809.38 × 1,925.70
  4. Step 4: Simplify right side
    3,875.40x = 11,187,123.07
  5. Step 5: Solve for x
    x = 11,187,123.07/3,875.40
  6. Step 6: Final answer
    x = 2,886.70

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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.