Home / 5,140.48-7,710.42-1,853.20

Finding the Fourth Proportional to 5,140.48, 7,710.42 and 1,853.20

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Solution

The fourth proportional to 5,140.48, 7,710.42 and 1,853.20 is: 2,779.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.48 : 7,710.42 = 1,853.20 : x
  2. Step 2: Convert to fraction form
    5,140.48/7,710.42 = 1,853.20/x
  3. Step 3: Cross multiply
    5,140.48x = 7,710.42 × 1,853.20
  4. Step 4: Simplify right side
    5,140.48x = 14,288,950.34
  5. Step 5: Solve for x
    x = 14,288,950.34/5,140.48
  6. Step 6: Final answer
    x = 2,779.69

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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.