Home / 1,290.16-1,932.76-1,030.64

Finding the Fourth Proportional to 1,290.16, 1,932.76 and 1,030.64

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Solution

The fourth proportional to 1,290.16, 1,932.76 and 1,030.64 is: 1,543.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.16 : 1,932.76 = 1,030.64 : x
  2. Step 2: Convert to fraction form
    1,290.16/1,932.76 = 1,030.64/x
  3. Step 3: Cross multiply
    1,290.16x = 1,932.76 × 1,030.64
  4. Step 4: Simplify right side
    1,290.16x = 1,991,979.77
  5. Step 5: Solve for x
    x = 1,991,979.77/1,290.16
  6. Step 6: Final answer
    x = 1,543.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.