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Finding the Fourth Proportional to 2,688.95, 4,015.01 and 2,409.50

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Solution

The fourth proportional to 2,688.95, 4,015.01 and 2,409.50 is: 3,597.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.95 : 4,015.01 = 2,409.50 : x
  2. Step 2: Convert to fraction form
    2,688.95/4,015.01 = 2,409.50/x
  3. Step 3: Cross multiply
    2,688.95x = 4,015.01 × 2,409.50
  4. Step 4: Simplify right side
    2,688.95x = 9,674,166.60
  5. Step 5: Solve for x
    x = 9,674,166.60/2,688.95
  6. Step 6: Final answer
    x = 3,597.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.