Home / 3,123.30-4,685.40-1,043.40

Finding the Fourth Proportional to 3,123.30, 4,685.40 and 1,043.40

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Solution

The fourth proportional to 3,123.30, 4,685.40 and 1,043.40 is: 1,565.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.30 : 4,685.40 = 1,043.40 : x
  2. Step 2: Convert to fraction form
    3,123.30/4,685.40 = 1,043.40/x
  3. Step 3: Cross multiply
    3,123.30x = 4,685.40 × 1,043.40
  4. Step 4: Simplify right side
    3,123.30x = 4,888,746.36
  5. Step 5: Solve for x
    x = 4,888,746.36/3,123.30
  6. Step 6: Final answer
    x = 1,565.25

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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.