Home / 8,715.95-12,028.30-5,130.26

Finding the Fourth Proportional to 8,715.95, 12,028.30 and 5,130.26

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Solution

The fourth proportional to 8,715.95, 12,028.30 and 5,130.26 is: 7,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.95 : 12,028.30 = 5,130.26 : x
  2. Step 2: Convert to fraction form
    8,715.95/12,028.30 = 5,130.26/x
  3. Step 3: Cross multiply
    8,715.95x = 12,028.30 × 5,130.26
  4. Step 4: Simplify right side
    8,715.95x = 61,708,306.36
  5. Step 5: Solve for x
    x = 61,708,306.36/8,715.95
  6. Step 6: Final answer
    x = 7,079.93

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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.