Home / 9,347.72-12,885.47-6,155.51

Finding the Fourth Proportional to 9,347.72, 12,885.47 and 6,155.51

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Solution

The fourth proportional to 9,347.72, 12,885.47 and 6,155.51 is: 8,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.72 : 12,885.47 = 6,155.51 : x
  2. Step 2: Convert to fraction form
    9,347.72/12,885.47 = 6,155.51/x
  3. Step 3: Cross multiply
    9,347.72x = 12,885.47 × 6,155.51
  4. Step 4: Simplify right side
    9,347.72x = 79,316,687.04
  5. Step 5: Solve for x
    x = 79,316,687.04/9,347.72
  6. Step 6: Final answer
    x = 8,485.13

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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.