Home / 1,656.15-2,485.20-616.89

Finding the Fourth Proportional to 1,656.15, 2,485.20 and 616.89

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Solution

The fourth proportional to 1,656.15, 2,485.20 and 616.89 is: 925.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.15 : 2,485.20 = 616.89 : x
  2. Step 2: Convert to fraction form
    1,656.15/2,485.20 = 616.89/x
  3. Step 3: Cross multiply
    1,656.15x = 2,485.20 × 616.89
  4. Step 4: Simplify right side
    1,656.15x = 1,533,095.03
  5. Step 5: Solve for x
    x = 1,533,095.03/1,656.15
  6. Step 6: Final answer
    x = 925.70

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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.