Home / 1,478.40-2,025.39-1,423.01

Finding the Fourth Proportional to 1,478.40, 2,025.39 and 1,423.01

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Solution

The fourth proportional to 1,478.40, 2,025.39 and 1,423.01 is: 1,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.40 : 2,025.39 = 1,423.01 : x
  2. Step 2: Convert to fraction form
    1,478.40/2,025.39 = 1,423.01/x
  3. Step 3: Cross multiply
    1,478.40x = 2,025.39 × 1,423.01
  4. Step 4: Simplify right side
    1,478.40x = 2,882,140.10
  5. Step 5: Solve for x
    x = 2,882,140.10/1,478.40
  6. Step 6: Final answer
    x = 1,949.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.