Home / 3,913.59-5,870.50-1,140.20

Finding the Fourth Proportional to 3,913.59, 5,870.50 and 1,140.20

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Solution

The fourth proportional to 3,913.59, 5,870.50 and 1,140.20 is: 1,710.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.59 : 5,870.50 = 1,140.20 : x
  2. Step 2: Convert to fraction form
    3,913.59/5,870.50 = 1,140.20/x
  3. Step 3: Cross multiply
    3,913.59x = 5,870.50 × 1,140.20
  4. Step 4: Simplify right side
    3,913.59x = 6,693,553.63
  5. Step 5: Solve for x
    x = 6,693,553.63/3,913.59
  6. Step 6: Final answer
    x = 1,710.34

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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.