Home / 4,931.20-7,392-1,810.32

Finding the Fourth Proportional to 4,931.20, 7,392 and 1,810.32

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Solution

The fourth proportional to 4,931.20, 7,392 and 1,810.32 is: 2,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.20 : 7,392 = 1,810.32 : x
  2. Step 2: Convert to fraction form
    4,931.20/7,392 = 1,810.32/x
  3. Step 3: Cross multiply
    4,931.20x = 7,392 × 1,810.32
  4. Step 4: Simplify right side
    4,931.20x = 13,381,885.44
  5. Step 5: Solve for x
    x = 13,381,885.44/4,931.20
  6. Step 6: Final answer
    x = 2,713.72

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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.