Home / 1,948.45-2,688.90-1,064.29

Finding the Fourth Proportional to 1,948.45, 2,688.90 and 1,064.29

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Solution

The fourth proportional to 1,948.45, 2,688.90 and 1,064.29 is: 1,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.45 : 2,688.90 = 1,064.29 : x
  2. Step 2: Convert to fraction form
    1,948.45/2,688.90 = 1,064.29/x
  3. Step 3: Cross multiply
    1,948.45x = 2,688.90 × 1,064.29
  4. Step 4: Simplify right side
    1,948.45x = 2,861,769.38
  5. Step 5: Solve for x
    x = 2,861,769.38/1,948.45
  6. Step 6: Final answer
    x = 1,468.74

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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.