Home / 4,685.90-7,030.14-1,399.10

Finding the Fourth Proportional to 4,685.90, 7,030.14 and 1,399.10

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Solution

The fourth proportional to 4,685.90, 7,030.14 and 1,399.10 is: 2,099.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.90 : 7,030.14 = 1,399.10 : x
  2. Step 2: Convert to fraction form
    4,685.90/7,030.14 = 1,399.10/x
  3. Step 3: Cross multiply
    4,685.90x = 7,030.14 × 1,399.10
  4. Step 4: Simplify right side
    4,685.90x = 9,835,868.87
  5. Step 5: Solve for x
    x = 9,835,868.87/4,685.90
  6. Step 6: Final answer
    x = 2,099.04

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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.