Home / 5,318.10-7,977.15-4,772.70

Finding the Fourth Proportional to 5,318.10, 7,977.15 and 4,772.70

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Solution

The fourth proportional to 5,318.10, 7,977.15 and 4,772.70 is: 7,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.10 : 7,977.15 = 4,772.70 : x
  2. Step 2: Convert to fraction form
    5,318.10/7,977.15 = 4,772.70/x
  3. Step 3: Cross multiply
    5,318.10x = 7,977.15 × 4,772.70
  4. Step 4: Simplify right side
    5,318.10x = 38,072,543.81
  5. Step 5: Solve for x
    x = 38,072,543.81/5,318.10
  6. Step 6: Final answer
    x = 7,159.05

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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.