Home / 9,123.20-12,590.01-4,931.45

Finding the Fourth Proportional to 9,123.20, 12,590.01 and 4,931.45

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Solution

The fourth proportional to 9,123.20, 12,590.01 and 4,931.45 is: 6,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.20 : 12,590.01 = 4,931.45 : x
  2. Step 2: Convert to fraction form
    9,123.20/12,590.01 = 4,931.45/x
  3. Step 3: Cross multiply
    9,123.20x = 12,590.01 × 4,931.45
  4. Step 4: Simplify right side
    9,123.20x = 62,087,000.88
  5. Step 5: Solve for x
    x = 62,087,000.88/9,123.20
  6. Step 6: Final answer
    x = 6,805.40

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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.