Home / 1,020.60-1,521.72-1,004.40

Finding the Fourth Proportional to 1,020.60, 1,521.72 and 1,004.40

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Solution

The fourth proportional to 1,020.60, 1,521.72 and 1,004.40 is: 1,497.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.60 : 1,521.72 = 1,004.40 : x
  2. Step 2: Convert to fraction form
    1,020.60/1,521.72 = 1,004.40/x
  3. Step 3: Cross multiply
    1,020.60x = 1,521.72 × 1,004.40
  4. Step 4: Simplify right side
    1,020.60x = 1,528,415.57
  5. Step 5: Solve for x
    x = 1,528,415.57/1,020.60
  6. Step 6: Final answer
    x = 1,497.57

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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.