Home / 8,751.42-13,130.55-5,291.10

Finding the Fourth Proportional to 8,751.42, 13,130.55 and 5,291.10

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Solution

The fourth proportional to 8,751.42, 13,130.55 and 5,291.10 is: 7,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.42 : 13,130.55 = 5,291.10 : x
  2. Step 2: Convert to fraction form
    8,751.42/13,130.55 = 5,291.10/x
  3. Step 3: Cross multiply
    8,751.42x = 13,130.55 × 5,291.10
  4. Step 4: Simplify right side
    8,751.42x = 69,475,053.11
  5. Step 5: Solve for x
    x = 69,475,053.11/8,751.42
  6. Step 6: Final answer
    x = 7,938.72

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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.