Home / 9,389.12-12,956.88-5,197.40

Finding the Fourth Proportional to 9,389.12, 12,956.88 and 5,197.40

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Solution

The fourth proportional to 9,389.12, 12,956.88 and 5,197.40 is: 7,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.12 : 12,956.88 = 5,197.40 : x
  2. Step 2: Convert to fraction form
    9,389.12/12,956.88 = 5,197.40/x
  3. Step 3: Cross multiply
    9,389.12x = 12,956.88 × 5,197.40
  4. Step 4: Simplify right side
    9,389.12x = 67,342,088.11
  5. Step 5: Solve for x
    x = 67,342,088.11/9,389.12
  6. Step 6: Final answer
    x = 7,172.35

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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.