Home / 6,511.60-8,985.96-3,860.32

Finding the Fourth Proportional to 6,511.60, 8,985.96 and 3,860.32

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Solution

The fourth proportional to 6,511.60, 8,985.96 and 3,860.32 is: 5,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.60 : 8,985.96 = 3,860.32 : x
  2. Step 2: Convert to fraction form
    6,511.60/8,985.96 = 3,860.32/x
  3. Step 3: Cross multiply
    6,511.60x = 8,985.96 × 3,860.32
  4. Step 4: Simplify right side
    6,511.60x = 34,688,681.11
  5. Step 5: Solve for x
    x = 34,688,681.11/6,511.60
  6. Step 6: Final answer
    x = 5,327.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.