Home / 1,298.04-1,930.39-1,257.03

Finding the Fourth Proportional to 1,298.04, 1,930.39 and 1,257.03

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Solution

The fourth proportional to 1,298.04, 1,930.39 and 1,257.03 is: 1,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.04 : 1,930.39 = 1,257.03 : x
  2. Step 2: Convert to fraction form
    1,298.04/1,930.39 = 1,257.03/x
  3. Step 3: Cross multiply
    1,298.04x = 1,930.39 × 1,257.03
  4. Step 4: Simplify right side
    1,298.04x = 2,426,555.00
  5. Step 5: Solve for x
    x = 2,426,555.00/1,298.04
  6. Step 6: Final answer
    x = 1,869.40

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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.