Home / 9,123.39-12,590.28-4,931.64

Finding the Fourth Proportional to 9,123.39, 12,590.28 and 4,931.64

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Solution

The fourth proportional to 9,123.39, 12,590.28 and 4,931.64 is: 6,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.39 : 12,590.28 = 4,931.64 : x
  2. Step 2: Convert to fraction form
    9,123.39/12,590.28 = 4,931.64/x
  3. Step 3: Cross multiply
    9,123.39x = 12,590.28 × 4,931.64
  4. Step 4: Simplify right side
    9,123.39x = 62,090,728.46
  5. Step 5: Solve for x
    x = 62,090,728.46/9,123.39
  6. Step 6: Final answer
    x = 6,805.66

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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.