Home / 3,117.53-4,678.46-1,386.29

Finding the Fourth Proportional to 3,117.53, 4,678.46 and 1,386.29

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Solution

The fourth proportional to 3,117.53, 4,678.46 and 1,386.29 is: 2,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.53 : 4,678.46 = 1,386.29 : x
  2. Step 2: Convert to fraction form
    3,117.53/4,678.46 = 1,386.29/x
  3. Step 3: Cross multiply
    3,117.53x = 4,678.46 × 1,386.29
  4. Step 4: Simplify right side
    3,117.53x = 6,485,702.31
  5. Step 5: Solve for x
    x = 6,485,702.31/3,117.53
  6. Step 6: Final answer
    x = 2,080.40

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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.