Home / 7,811.16-10,779.12-4,274.40

Finding the Fourth Proportional to 7,811.16, 10,779.12 and 4,274.40

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Solution

The fourth proportional to 7,811.16, 10,779.12 and 4,274.40 is: 5,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.16 : 10,779.12 = 4,274.40 : x
  2. Step 2: Convert to fraction form
    7,811.16/10,779.12 = 4,274.40/x
  3. Step 3: Cross multiply
    7,811.16x = 10,779.12 × 4,274.40
  4. Step 4: Simplify right side
    7,811.16x = 46,074,270.53
  5. Step 5: Solve for x
    x = 46,074,270.53/7,811.16
  6. Step 6: Final answer
    x = 5,898.52

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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.