Home / 5,436.98-8,156.64-1,688.68

Finding the Fourth Proportional to 5,436.98, 8,156.64 and 1,688.68

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Solution

The fourth proportional to 5,436.98, 8,156.64 and 1,688.68 is: 2,533.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.98 : 8,156.64 = 1,688.68 : x
  2. Step 2: Convert to fraction form
    5,436.98/8,156.64 = 1,688.68/x
  3. Step 3: Cross multiply
    5,436.98x = 8,156.64 × 1,688.68
  4. Step 4: Simplify right side
    5,436.98x = 13,773,954.84
  5. Step 5: Solve for x
    x = 13,773,954.84/5,436.98
  6. Step 6: Final answer
    x = 2,533.38

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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.