Home / 2,942.30-4,060.78-1,897.40

Finding the Fourth Proportional to 2,942.30, 4,060.78 and 1,897.40

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Solution

The fourth proportional to 2,942.30, 4,060.78 and 1,897.40 is: 2,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.30 : 4,060.78 = 1,897.40 : x
  2. Step 2: Convert to fraction form
    2,942.30/4,060.78 = 1,897.40/x
  3. Step 3: Cross multiply
    2,942.30x = 4,060.78 × 1,897.40
  4. Step 4: Simplify right side
    2,942.30x = 7,704,929.38
  5. Step 5: Solve for x
    x = 7,704,929.38/2,942.30
  6. Step 6: Final answer
    x = 2,618.67

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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.