Home / 8,715.29-12,030.62-5,570.87

Finding the Fourth Proportional to 8,715.29, 12,030.62 and 5,570.87

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Solution

The fourth proportional to 8,715.29, 12,030.62 and 5,570.87 is: 7,690.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.29 : 12,030.62 = 5,570.87 : x
  2. Step 2: Convert to fraction form
    8,715.29/12,030.62 = 5,570.87/x
  3. Step 3: Cross multiply
    8,715.29x = 12,030.62 × 5,570.87
  4. Step 4: Simplify right side
    8,715.29x = 67,020,932.03
  5. Step 5: Solve for x
    x = 67,020,932.03/8,715.29
  6. Step 6: Final answer
    x = 7,690.04

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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.