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Finding the Fourth Proportional to 2,390.04, 3,583.98 and 928.08

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Solution

The fourth proportional to 2,390.04, 3,583.98 and 928.08 is: 1,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.04 : 3,583.98 = 928.08 : x
  2. Step 2: Convert to fraction form
    2,390.04/3,583.98 = 928.08/x
  3. Step 3: Cross multiply
    2,390.04x = 3,583.98 × 928.08
  4. Step 4: Simplify right side
    2,390.04x = 3,326,220.16
  5. Step 5: Solve for x
    x = 3,326,220.16/2,390.04
  6. Step 6: Final answer
    x = 1,391.70

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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.