Home / 2,415.60-3,623.37-1,931.72

Finding the Fourth Proportional to 2,415.60, 3,623.37 and 1,931.72

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Solution

The fourth proportional to 2,415.60, 3,623.37 and 1,931.72 is: 2,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.60 : 3,623.37 = 1,931.72 : x
  2. Step 2: Convert to fraction form
    2,415.60/3,623.37 = 1,931.72/x
  3. Step 3: Cross multiply
    2,415.60x = 3,623.37 × 1,931.72
  4. Step 4: Simplify right side
    2,415.60x = 6,999,318.18
  5. Step 5: Solve for x
    x = 6,999,318.18/2,415.60
  6. Step 6: Final answer
    x = 2,897.55

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1.5x scale

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.