Home / 1,299.04-1,931.87-1,258.03

Finding the Fourth Proportional to 1,299.04, 1,931.87 and 1,258.03

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Solution

The fourth proportional to 1,299.04, 1,931.87 and 1,258.03 is: 1,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.04 : 1,931.87 = 1,258.03 : x
  2. Step 2: Convert to fraction form
    1,299.04/1,931.87 = 1,258.03/x
  3. Step 3: Cross multiply
    1,299.04x = 1,931.87 × 1,258.03
  4. Step 4: Simplify right side
    1,299.04x = 2,430,350.42
  5. Step 5: Solve for x
    x = 2,430,350.42/1,299.04
  6. Step 6: Final answer
    x = 1,870.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.