Home / 1,916.59-2,875.16-617.76

Finding the Fourth Proportional to 1,916.59, 2,875.16 and 617.76

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Solution

The fourth proportional to 1,916.59, 2,875.16 and 617.76 is: 926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.59 : 2,875.16 = 617.76 : x
  2. Step 2: Convert to fraction form
    1,916.59/2,875.16 = 617.76/x
  3. Step 3: Cross multiply
    1,916.59x = 2,875.16 × 617.76
  4. Step 4: Simplify right side
    1,916.59x = 1,776,158.84
  5. Step 5: Solve for x
    x = 1,776,158.84/1,916.59
  6. Step 6: Final answer
    x = 926.73

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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.