Home / 1,660.38-2,290.64-1,030.70

Finding the Fourth Proportional to 1,660.38, 2,290.64 and 1,030.70

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Solution

The fourth proportional to 1,660.38, 2,290.64 and 1,030.70 is: 1,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.38 : 2,290.64 = 1,030.70 : x
  2. Step 2: Convert to fraction form
    1,660.38/2,290.64 = 1,030.70/x
  3. Step 3: Cross multiply
    1,660.38x = 2,290.64 × 1,030.70
  4. Step 4: Simplify right side
    1,660.38x = 2,360,946.04
  5. Step 5: Solve for x
    x = 2,360,946.04/1,660.38
  6. Step 6: Final answer
    x = 1,421.93

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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.