Home / 9,123.28-12,590.16-4,931.56

Finding the Fourth Proportional to 9,123.28, 12,590.16 and 4,931.56

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Solution

The fourth proportional to 9,123.28, 12,590.16 and 4,931.56 is: 6,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.28 : 12,590.16 = 4,931.56 : x
  2. Step 2: Convert to fraction form
    9,123.28/12,590.16 = 4,931.56/x
  3. Step 3: Cross multiply
    9,123.28x = 12,590.16 × 4,931.56
  4. Step 4: Simplify right side
    9,123.28x = 62,089,129.45
  5. Step 5: Solve for x
    x = 62,089,129.45/9,123.28
  6. Step 6: Final answer
    x = 6,805.57

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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.