Home / 6,915.48-10,374.96-1,985.58

Finding the Fourth Proportional to 6,915.48, 10,374.96 and 1,985.58

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Solution

The fourth proportional to 6,915.48, 10,374.96 and 1,985.58 is: 2,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.48 : 10,374.96 = 1,985.58 : x
  2. Step 2: Convert to fraction form
    6,915.48/10,374.96 = 1,985.58/x
  3. Step 3: Cross multiply
    6,915.48x = 10,374.96 × 1,985.58
  4. Step 4: Simplify right side
    6,915.48x = 20,600,313.08
  5. Step 5: Solve for x
    x = 20,600,313.08/6,915.48
  6. Step 6: Final answer
    x = 2,978.87

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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.