Home / 8,923.95-12,312-5,147.01

Finding the Fourth Proportional to 8,923.95, 12,312 and 5,147.01

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Solution

The fourth proportional to 8,923.95, 12,312 and 5,147.01 is: 7,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,923.95 : 12,312 = 5,147.01 : x
  2. Step 2: Convert to fraction form
    8,923.95/12,312 = 5,147.01/x
  3. Step 3: Cross multiply
    8,923.95x = 12,312 × 5,147.01
  4. Step 4: Simplify right side
    8,923.95x = 63,369,987.12
  5. Step 5: Solve for x
    x = 63,369,987.12/8,923.95
  6. Step 6: Final answer
    x = 7,101.11

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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.