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Finding the Fourth Proportional to 2,931.04, 4,376.84 and 2,898.64

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Solution

The fourth proportional to 2,931.04, 4,376.84 and 2,898.64 is: 4,328.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.04 : 4,376.84 = 2,898.64 : x
  2. Step 2: Convert to fraction form
    2,931.04/4,376.84 = 2,898.64/x
  3. Step 3: Cross multiply
    2,931.04x = 4,376.84 × 2,898.64
  4. Step 4: Simplify right side
    2,931.04x = 12,686,883.50
  5. Step 5: Solve for x
    x = 12,686,883.50/2,931.04
  6. Step 6: Final answer
    x = 4,328.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.