Home / 5,436.86-8,156.56-1,688.45

Finding the Fourth Proportional to 5,436.86, 8,156.56 and 1,688.45

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Solution

The fourth proportional to 5,436.86, 8,156.56 and 1,688.45 is: 2,533.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.86 : 8,156.56 = 1,688.45 : x
  2. Step 2: Convert to fraction form
    5,436.86/8,156.56 = 1,688.45/x
  3. Step 3: Cross multiply
    5,436.86x = 8,156.56 × 1,688.45
  4. Step 4: Simplify right side
    5,436.86x = 13,771,913.32
  5. Step 5: Solve for x
    x = 13,771,913.32/5,436.86
  6. Step 6: Final answer
    x = 2,533.06

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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.