Home / 5,123.79-7,070.85-3,106.53

Finding the Fourth Proportional to 5,123.79, 7,070.85 and 3,106.53

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Solution

The fourth proportional to 5,123.79, 7,070.85 and 3,106.53 is: 4,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.79 : 7,070.85 = 3,106.53 : x
  2. Step 2: Convert to fraction form
    5,123.79/7,070.85 = 3,106.53/x
  3. Step 3: Cross multiply
    5,123.79x = 7,070.85 × 3,106.53
  4. Step 4: Simplify right side
    5,123.79x = 21,965,807.65
  5. Step 5: Solve for x
    x = 21,965,807.65/5,123.79
  6. Step 6: Final answer
    x = 4,287.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.