Home / 6,916.13-10,374.15-1,985.78

Finding the Fourth Proportional to 6,916.13, 10,374.15 and 1,985.78

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Solution

The fourth proportional to 6,916.13, 10,374.15 and 1,985.78 is: 2,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.13 : 10,374.15 = 1,985.78 : x
  2. Step 2: Convert to fraction form
    6,916.13/10,374.15 = 1,985.78/x
  3. Step 3: Cross multiply
    6,916.13x = 10,374.15 × 1,985.78
  4. Step 4: Simplify right side
    6,916.13x = 20,600,779.59
  5. Step 5: Solve for x
    x = 20,600,779.59/6,916.13
  6. Step 6: Final answer
    x = 2,978.66

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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.