Home / 7,931.89-11,897.37-2,385.10

Finding the Fourth Proportional to 7,931.89, 11,897.37 and 2,385.10

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Solution

The fourth proportional to 7,931.89, 11,897.37 and 2,385.10 is: 3,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.89 : 11,897.37 = 2,385.10 : x
  2. Step 2: Convert to fraction form
    7,931.89/11,897.37 = 2,385.10/x
  3. Step 3: Cross multiply
    7,931.89x = 11,897.37 × 2,385.10
  4. Step 4: Simplify right side
    7,931.89x = 28,376,417.19
  5. Step 5: Solve for x
    x = 28,376,417.19/7,931.89
  6. Step 6: Final answer
    x = 3,577.51

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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.